共用题干 The Impact of Antarctic Ozone HoleThe Antarctic ozone(臭氧)hole is changing weather patterns across the Southern Hemisphere (半球),even affecting the tropics,scientists have concluded. The scientists______(51)the new study added the ozone hole into stand

题目
共用题干
The Impact of Antarctic Ozone Hole

The Antarctic ozone(臭氧)hole is changing weather patterns across the Southern Hemisphere (半球),even affecting the tropics,scientists have concluded. The scientists______(51)the new study added the ozone hole into standard climate models to_______(52)how it might have affected winds and rains. They say rainfall has moved further south towards the pole and the effect has been_______(53)strong over Australia.
And of_______(54)interest was the southward of the Southern Hemisphere jet stream. These high一altitude winds are_______(55)to determining weather patterns,in both hemispheres. Much of the cold weather felt in the UK_______(56)the last couple of winters,for example,was caused by blocking of the Northern Hemisphere stream.
The team found that overall,the ozone hole has_______(57)in rainfall moving south along with the winds._______(58)there are regional differences,particularly concerning Australia. In terms of the average for that zone,the ozone hole_______(59)about a 10% change一but for Australia,it's about 35%.
Their modeling indicated that global warming_______(60)greenhouse gas emissions is also a factor in changing rainfall patterns.
Natural climate cycles are also thought to be important here,as different rainfall patterns were _______(61)in the era before ozone depletion(消耗)and late 20th Century warming.
Although the_______(62)international organization has significantly checked emissions of harmful substances,they_______(63)for decades in the atmosphere,and so their effects are still being felt.Earlier,and international organization forecast that even the Antarctic ozone hole一which is more severe than its_______(64)in the Northern Hemisphere一should be_______(65)by 2045—2060.

_________(58)
A:So
B:But
C:Since
D:And

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2.共用题干 The Impact of Antarctic Ozone HoleThe Antarctic ozone(臭氧)hole is changing weather patterns across the Southern Hemisphere (半球),even affecting the tropics,scientists have concluded. The scientists______(51)the new study added the ozone hole into standard climate models to_______(52)how it might have affected winds and rains. They say rainfall has moved further south towards the pole and the effect has been_______(53)strong over Australia.And of_______(54)interest was the southward of the Southern Hemisphere jet stream. These high一altitude winds are_______(55)to determining weather patterns,in both hemispheres. Much of the cold weather felt in the UK_______(56)the last couple of winters,for example,was caused by blocking of the Northern Hemisphere stream.The team found that overall,the ozone hole has_______(57)in rainfall moving south along with the winds._______(58)there are regional differences,particularly concerning Australia. In terms of the average for that zone,the ozone hole_______(59)about a 10% change一but for Australia,it's about 35%.Their modeling indicated that global warming_______(60)greenhouse gas emissions is also a factor in changing rainfall patterns.Natural climate cycles are also thought to be important here,as different rainfall patterns were _______(61)in the era before ozone depletion(消耗)and late 20th Century warming.Although the_______(62)international organization has significantly checked emissions of harmful substances,they_______(63)for decades in the atmosphere,and so their effects are still being felt.Earlier,and international organization forecast that even the Antarctic ozone hole一which is more severe than its_______(64)in the Northern Hemisphere一should be_______(65)by 2045—2060._________(54)A:particular B:specialC:especial D:specific

3.共用题干 The Impact of Antarctic Ozone HoleThe Antarctic ozone(臭氧)hole is changing weather patterns across the Southern Hemisphere (半球),even affecting the tropics,scientists have concluded. The scientists______(51)the new study added the ozone hole into standard climate models to_______(52)how it might have affected winds and rains. They say rainfall has moved further south towards the pole and the effect has been_______(53)strong over Australia.And of_______(54)interest was the southward of the Southern Hemisphere jet stream. These high一altitude winds are_______(55)to determining weather patterns,in both hemispheres. Much of the cold weather felt in the UK_______(56)the last couple of winters,for example,was caused by blocking of the Northern Hemisphere stream.The team found that overall,the ozone hole has_______(57)in rainfall moving south along with the winds._______(58)there are regional differences,particularly concerning Australia. In terms of the average for that zone,the ozone hole_______(59)about a 10% change一but for Australia,it's about 35%.Their modeling indicated that global warming_______(60)greenhouse gas emissions is also a factor in changing rainfall patterns.Natural climate cycles are also thought to be important here,as different rainfall patterns were _______(61)in the era before ozone depletion(消耗)and late 20th Century warming.Although the_______(62)international organization has significantly checked emissions of harmful substances,they_______(63)for decades in the atmosphere,and so their effects are still being felt.Earlier,and international organization forecast that even the Antarctic ozone hole一which is more severe than its_______(64)in the Northern Hemisphere一should be_______(65)by 2045—2060._________(51)A:before B:behindC:above D:under

4.共用题干 B1i'k Holes1 Black holes can be best described as a sort of vacuum,sucking up everything in space. Scientists have discovered that black holes come from an explosion of huge stars. Stars that are near death can no longer burn due to loss of fuel , and because its temperature can no longer control the gravitational(重力的)force, hydrogen ends up putting pressure onto the star' s surface until it suddenly explodes then collapses.2 Black holes come from stars that are made of hydrogen,other gases and a few metals. When these explode it can turn into a stellar-mass ( 恒星质量)black hole , which can only occur if the star is large enough (should be bigger than the sun) for the explosion to break it into pieces,and the gravity starts to compact every piece into the tiniest particle. Try to see and compare:if a star that' s ten times the size of the sun endsup being a black hole that' s no longer than 70 kilometers ,then the Earth would become a black hole that' sonly"fraction of an inch! 3 Objects that get sucked in a black hie will always remain there,never to brsak fren. But rememberthat black holes can only gobble up(吞噬)objects within a specific distance to it It' s possible for a largestar near the sun to become a black hole,but the sun will continue to stay in place. Orbits (轨道)do notchange because the newly formed black hole, contains exactly the same amount of mass as when it was a star,only this time its mass is totally contracted that it can end up as on biggeer tnan a state. 4 So far, astronomers have figured out that black holes exist because of Albert Einstenin's theory of relativity. In the end,through numerous studies ,they have discovered that black holes truly exist. Since blackholes trap light and do not give off light,it is nearly impossible to detect black goles via a telescope. Butastronomers continue to study galaxies (银河系),space and the solar system to understand how black holes misht evolve. It is possible that black holes can exist for millions of years,and later contribute to a biggerprocess in galaxies ,which can eventually lead to creation of new entities(实体).Scientists also credit blackholes as helpful in learning how galaxies began to form. Paragraph 2_____________A:What Happens to the Objects Around a Black Hole?B:Is There Proof That Black Holes Really Exist? C:How Were Black Holes Named? D:What Are Different Types of Black Holes?E:What Are Black Holes Made of?F:How Are Black Holes Formed?

更多“共用题干 The Impact of Antarctic Ozone HoleThe Antarctic ozone(臭氧)hole is changing weather patterns across the Southern Hemisphere (半球),even affecting the tropics,scientists have concluded. The scientists______(51)the new study added the ozone hole into stand”相关问题
  • 第1题:

    共用题干
    Black Holes

    1 Black holes can be best described as a sort of vacuum,sucking up everything in space.Scientists
    have discovered that black holes come from an explosion of huge stars.Stars that are near death can no longer
    burn due to loss of fuel , and because its temperature can no longer control the gravitational(重力的)force,
    hydrogen ends up putting pressure onto the star's surface until it suddenly explodes then collapses.
    2 Black holes come from stars ihat are made of hydrogen,other gases and a few metals.When these
    explode it can turn into a stellar-mass(恒星质量) black hole , which can only occur if the star is large enough
    (should be bigger than the sun)for the explosion to break it into pieces,and the gravity starts to compact
    every piece into the tiniest particle.Try to see and compare:if a star that's ten times the size of the sun ends
    up being a black hole that's no longer than 70 kilometers,then the Earth would become a black hole that'S
    only a fraction of an inch!
    3 Objects that get sucked in a black hole will always remain there,never to break free.i1it remember
    that black holes can only gobble up(吞噬)objects within a specific distance to it.It's possible for a large
    star near the sun to become a black hole,but the sun will continue to stay in place.Orbits(轨道)do not
    change because the newly formed black hole contains exactly the same amount of mass as when it was a star,
    only this time its mass is totally contracted that it can end up as no bigger than a state.
    4 Sofar,astronomers have figured out that black holes exist because of Albert Einstcin's theory of
    relativity.In the end,through numerous studies,they have discovered that black holes truly exist.Since black
    holes trap light and do not give off light,it is nearly impossible to detect black holes via a telescope.But
    astronomers continue to study galaxies(银河系), space and the solar system to understand how black holes
    might evolve.It is possible that black holes can exist for millions of years,and later contribute to a bigger
    process in galaxies,which can eventually lead to creation of new entities(实体).Scientists also credit black
    holes as helpful in learning how galaxies began to form.

    When a large star explodes,the gravity compacts every piece into______.
    A:the existence of black holes
    B:the creation of new entities
    C:the same amount of mass
    D:an fraction of an inch
    E:a fraction of an inch
    F:the tiniest particle

    答案:F
    解析:
    第一段描述了什么是黑洞,以及它产生的缘由―巨型恒星爆炸,并叙述了恒星爆炸的 原因和简要过程。再看选项,只有F项符合题意。
    第二段的主要内容是:恒星来自由氢气、其他气体和一些金属组成的恒星;当这些物质 爆炸时,恒星就变成了质量与原先的恒星等同的黑洞,恒星的每个碎片都被重力压缩成极小的 颗粒。观察选项,似乎E、F两项都可选,但一则上一小题只能选F项,二则此段虽也讲了黑洞 是怎么形成的,但比较侧重黑洞形成过程中,原来的恒星变成极小的颗粒。由第三段最后一句 也可知,这些颗粒的质量总和与原来的恒星一样,正是这些颗粒使黑洞有极大的吸附性,而成 其为“黑洞”。因此,黑洞就是由这些极小却质量巨大、吸附性极强的颗粒构成的。故选E。
    第三段描述了黑洞极大的吸附性,及其具有如此大的吸附性的原因。黑洞形成后,周 围一定距离内的几乎一切东西都会被吞噬而难以逃脱,故选A。
    第四段主要讲黑洞存在的依据及科学家们的研究和设想。故选B。
    由第一段第二句“...black holes come from an explosion of huge stars.”可知答案。
    由第二段第二句后半部分“...the gravity starts to compact every piece into the tiniestparticle”可知答案。
    由第三段最后一句“…the newly formed black hole contains exactly the same amount of mass as when it was a star...”可知答案。
    由第四段第一句话可知答案。

  • 第2题:

    共用题干
    The Impact of Antarctic Ozone Hole

    The Antarctic ozone(臭氧)hole is changing weather patterns across the Southern Hemisphere (半球),even affecting the tropics,scientists have concluded. The scientists______(51)the new study added the ozone hole into standard climate models to_______(52)how it might have affected winds and rains. They say rainfall has moved further south towards the pole and the effect has been_______(53)strong over Australia.
    And of_______(54)interest was the southward of the Southern Hemisphere jet stream. These high一altitude winds are_______(55)to determining weather patterns,in both hemispheres. Much of the cold weather felt in the UK_______(56)the last couple of winters,for example,was caused by blocking of the Northern Hemisphere stream.
    The team found that overall,the ozone hole has_______(57)in rainfall moving south along with the winds._______(58)there are regional differences,particularly concerning Australia. In terms of the average for that zone,the ozone hole_______(59)about a 10% change一but for Australia,it's about 35%.
    Their modeling indicated that global warming_______(60)greenhouse gas emissions is also a factor in changing rainfall patterns.
    Natural climate cycles are also thought to be important here,as different rainfall patterns were _______(61)in the era before ozone depletion(消耗)and late 20th Century warming.
    Although the_______(62)international organization has significantly checked emissions of harmful substances,they_______(63)for decades in the atmosphere,and so their effects are still being felt.Earlier,and international organization forecast that even the Antarctic ozone hole一which is more severe than its_______(64)in the Northern Hemisphere一should be_______(65)by 2045—2060.

    _________(56)
    A: around
    B:along
    C:over
    D:across

    答案:C
    解析:
    本题考查对上下文的理解。本空所在句中,科学家和研究应该是动宾关系,但这里又不需要一个句子的结构,而需要名词结构作本句的主语,指“从事参与研究的科学家”。因此需要一个介词,既能表达参与的意思,又能确保这个短语为名词短语。只有behind符合,behind在此处意思是“在……背后,为……负责”。因此本题的正确选项应该是B。
    本题考查对上下文的理解和对动词的辫析。这句话的意思是:参与此项新研究的科学家们把臭氧层加入标准化气候模型,以研究其如何影响风和雨的格局。本空前是to,后是how,根据上下文可以推断,这里是用不定式表达科学家所做的事情的目的,所以正确答案是选项C investigate调查。其他选项的意思分别是:选项A inspect监视;选项B scan扫描;选项D supervise监管。
    本题考查对上下文的理解和对副词的辨析。这句话的意思是:科学家称降雨已向南极进一步移动,对澳大利亚的影响尤为强烈。这篇文章主要是关于南极臭氧层空洞的影响,作者提到具体影响的地点就应该是强调其影响之大,所以正确答案是选项A remarkably非常地。其他选项的意思分别是:选项B preferably更可取地、更好地;选项C indispensably不可缺少地、绝对必要地;选项D plausibly似真地。
    本题考查对上下文的理解和介词短语固定搭配。这句话的意思是:科学家们尤为感兴趣的是南半球急流的南移。选A的依据是第一段最后一句:科学家称降雨已向南极进一步移动,所以第二段第一句所讲的interest应该是指科学家的兴趣,而此句后文证明本段讲的是科学家研究的更具体的内容,即南极臭氧空洞对于南半球急流的影响。空前是介词of,空后是名词interest, of particular interest的意思是尤其使人感兴趣的,符合上下文的需要,选项A particular特别的,是正确答案。其他选项的意思分别是:选项B special特别的,但不适用于of…interest这一短语;选项C especial特别的,但也不能和of以及interest组成固定搭配;选项D specific具体的。
    本题考查对上下文的理解和形容词短语。这句话的意思是:这些高空风是决定南北半球气候模式的关键。选B的依据是本空的前面提到了风,后面提到了气候模式,常识告诉我们风影响甚至决定气候模式;又由于本空前是系动词are,本空后to后面跟的是动名词determining,而只有选项B key关键,能和前后词构成符合上下文需要的短语be key to是……的关键。所以选项B是正确答案。其他选项与to搭配后的意思分别是:选项A be beneficial to对……有益;选项C be necessary to对……而言必要;选项D be vital to对……至关重要。而这三个形容词后面的to都是不定式标志,其后要跟动词原形。
    本题考查对上下文的理解和介词辫析。空后提到:the last couple of winters过去的几个冬天,是表示时间的名词短语。四个选项中,只有选项C能表示在……期间,所以选项C是正确答案。其他选项的意思分别是:选项A around大约(在);选项B along沿着;选项D across横跨。这三个选项不和时间连用,或者不强调时间跨度,不符合上下文需要。
    本题考查对上下文的理解和动词辫析。这句话的意思是:这个研究团队发现,臭氧层空洞总体上导致了降雨随风向南移动。文章主题是臭氧层空洞会改变气候,而 rainfall属于气候范畴,由此可判断此处具体讲臭氧层空洞对降雨的影响。result in导致,符合上下文要求,所以选项A resulted是正确答案。其他选项与in搭配的动词原形意思分别是:选项B draw in到达、变短;选项C bring in产生;选项D drop in顺便拜访。
    本题考查对上下文的理解和语义逻辑。这句话的意思是:但是存在着地区差异,尤其在澳大利亚上空。上一句讲整体上的(overall)情况而本句说到“有地区差异 ( regional differences)",两句为转折关系,选项B But的意思是但是,所以选项B是正确答案。
    本题考查对上下文的理解和动词辫析。该句是上一句的例证,上一句说臭氧层空洞对降雨的影响有地区差异,所以此处是要表示“影响”的词,符合的只有选项A drive change推动变化,且文章主题(臭氧层空洞会改变气候模式)也是提示。所以选项A是正确答案。选项B attract吸引;选项C motivate激发、诱发;选项D include包括。
    本题考查对上下文的理解和介词短语辫析。这句话的意思是:他们的模型表明,由温室气体排放所导致的全球变暖也是改变降雨格局的一个因素。greenhouse gas emissions"温室气体排放”是导致global warming“全球变暖”的原因,选项A due to的意思是由于,所以A是正确答案。其他选项的意思是:选项B along with和……一道;选项C as for至于;选项D instead of而不是。
    本题考查对上下文的理解。这句话的意思是:自然气候周期也是一个很重要的因素,因为在臭氧消耗和20世纪末期全球变暖之前就发现有不同的降雨格局。选B的依据是:此处是被动句,表示“不同的降雨格局在……之前已经被‘留意到、观察到”,,因此选项B noted符合文意。此处为过去的客观事实,因此选项A predicted“预言、预测”不符合;选项 C occured“发生、出现、存在”语义符合,但它一般直接用主动语态;选项D descend“下降、下来”不符合题意。所以选项B是正确答案。
    本题考查对上下文的理解和形容词辫析。这句话的意思是:虽然相关国际组织已经明显控制了有害气体的排放量,但这些有害气体还会在大气中留存几十年,因此它们的影响仍然存在。此处需修饰international organization的词,只有选项D corresponding相应的,符合题意,表示“相应的国际组织”。所以选项D是正确答案。其他选项的意思是:选项A popular流行的;选项B controversial有争议的;选项C distinctive独特的。
    本题考查对上下文的理解和动词辫析。选D的依据是:本空后的so表明该句是下句的原因,下句说有害气体的影响还存在,由此可推断这些物质几十年来还留存在大气中,所以选项D endure是正确答案。其他选项的意思分别是:选项A flash闪烁;选项B fluctuate波动;选项C suffer遭受、遭殃。
    本题考查对上下文的理解和名词辫析。本句的意思是:早前,一个国际机构预测:比北极臭氧层空洞更严重的南极臭氧层空洞将在2045年到2060年得到修复。more than说明是比较,此处把Antarctic ozone hole与在Northern Hemisphere的同类事物作比较,南北极的臭氧空洞属于对等物,所以选项C equivalent对等物、相等物是正确答案。其他选项的意思分别是:选项A illusion幻觉、错觉;选项B image形象;选项D extension延长部分。
    本题考查对上下文的理解和动词辫析。选择D的依据是:此空所填动词的宾语是the Antarctic ozone hole“南极臭氧层空洞”,可以接此宾语的只有选项D repaired修复。选项A repeated重复;选项B reproduced繁殖、复制;选项C replaced代替。

  • 第3题:

    共用题干
    Black Holes

    1 Black holes can be best described as a sort of vacuum,sucking up everything in space.Scientists
    have discovered that black holes come from an explosion of huge stars.Stars that are near death can no longer
    burn due to loss of fuel , and because its temperature can no longer control the gravitational(重力的)force,
    hydrogen ends up putting pressure onto the star's surface until it suddenly explodes then collapses.
    2 Black holes come from stars ihat are made of hydrogen,other gases and a few metals.When these
    explode it can turn into a stellar-mass(恒星质量) black hole , which can only occur if the star is large enough
    (should be bigger than the sun)for the explosion to break it into pieces,and the gravity starts to compact
    every piece into the tiniest particle.Try to see and compare:if a star that's ten times the size of the sun ends
    up being a black hole that's no longer than 70 kilometers,then the Earth would become a black hole that'S
    only a fraction of an inch!
    3 Objects that get sucked in a black hole will always remain there,never to break free.i1it remember
    that black holes can only gobble up(吞噬)objects within a specific distance to it.It's possible for a large
    star near the sun to become a black hole,but the sun will continue to stay in place.Orbits(轨道)do not
    change because the newly formed black hole contains exactly the same amount of mass as when it was a star,
    only this time its mass is totally contracted that it can end up as no bigger than a state.
    4 Sofar,astronomers have figured out that black holes exist because of Albert Einstcin's theory of
    relativity.In the end,through numerous studies,they have discovered that black holes truly exist.Since black
    holes trap light and do not give off light,it is nearly impossible to detect black holes via a telescope.But
    astronomers continue to study galaxies(银河系), space and the solar system to understand how black holes
    might evolve.It is possible that black holes can exist for millions of years,and later contribute to a bigger
    process in galaxies,which can eventually lead to creation of new entities(实体).Scientists also credit black
    holes as helpful in learning how galaxies began to form.

    Paragraph 1________
    A:What Happens to the Objects Around a Black Hole?
    B:Is There Proof That Black Holes Really Exist?
    C:How Were Black Holes Named?
    D:What Are Different Types of Black Holes?
    E:What Are Black Holes Made of?
    F: How Are Black Holes Formed?

    答案:F
    解析:
    第一段描述了什么是黑洞,以及它产生的缘由―巨型恒星爆炸,并叙述了恒星爆炸的 原因和简要过程。再看选项,只有F项符合题意。
    第二段的主要内容是:恒星来自由氢气、其他气体和一些金属组成的恒星;当这些物质 爆炸时,恒星就变成了质量与原先的恒星等同的黑洞,恒星的每个碎片都被重力压缩成极小的 颗粒。观察选项,似乎E、F两项都可选,但一则上一小题只能选F项,二则此段虽也讲了黑洞 是怎么形成的,但比较侧重黑洞形成过程中,原来的恒星变成极小的颗粒。由第三段最后一句 也可知,这些颗粒的质量总和与原来的恒星一样,正是这些颗粒使黑洞有极大的吸附性,而成 其为“黑洞”。因此,黑洞就是由这些极小却质量巨大、吸附性极强的颗粒构成的。故选E。
    第三段描述了黑洞极大的吸附性,及其具有如此大的吸附性的原因。黑洞形成后,周 围一定距离内的几乎一切东西都会被吞噬而难以逃脱,故选A。
    第四段主要讲黑洞存在的依据及科学家们的研究和设想。故选B。
    由第一段第二句“...black holes come from an explosion of huge stars.”可知答案。
    由第二段第二句后半部分“...the gravity starts to compact every piece into the tiniestparticle”可知答案。
    由第三段最后一句“…the newly formed black hole contains exactly the same amount of mass as when it was a star...”可知答案。
    由第四段第一句话可知答案。

  • 第4题:

    Scientists say climate change and human activity have increasingly led to the melting of ______ pieces of Antarctic ice.

    A.massive
    B.quantitative
    C.surplus
    D.formidable

    答案:A
    解析:
    题目意为“科学家们说,气候变化和人类活动日益导致了大量南极冰的融化。”选项A意为“大规模的,大量的”,选项B意为“定量的”,选项C意为“过剩的,多余的”,选项D意为“可怕的”。根据题意,故选A。
      

  • 第5题:

    共用题干
    Black Holes

    Most scientists agree that black holes exist but are nearly impossible to locate.A black hole
    in the universe is not a solid object, like a planet, but it is shaped like a sphere(球体).
    Astronomers(天文学家)think that at the center of a black hole there is a single point in space
    with infinite(无限的)density(稠密).This single point is called a singularity(奇点).If the
    singularity theory is correct,it means that when a massive star collapses,all the material in it
    disappears into the singularity.The center of a black hole would not really be a hole at all,but
    an infinitely dense point.Anything that crosses the black hole is pulled in by its great gravity.
    Although black holes do exist,they are difficult to observe.These are the reasons.
    No light or anything else comes out of black holes.As a result,they are invisible to a telescope.
    In astronomical terms,black holes are truly tiny.For example,a black hole formed by the collapse of a giant star would have an event horizon(视界)only 18 miles across.
    The nearest black holes would be dozens of light years away from Earth.One light
    year is about 6 trillion(万亿)miles. Even the most powerful telescopes could not pick out
    an object so small at such a great distance.
    In 1994 the Hubble Space Telescope provided evidence that black holes exist. There are
    still answers to be found,however,so black holes remain one of the mysteries of the universe.

    The Hubble Space Telescope helps scientists to understand the nature of the universe.
    A:Right
    B:Wrong
    C:Not mentioned

    答案:A
    解析:

  • 第6题:

    A technician is performing scheduled preventive maintenance on a laser printer. Which of the following should the technician clean or replace? ()

    • A、fuser
    • B、ozone filter
    • C、transfer corona
    • D、primary corona

    正确答案:B

  • 第7题:

    单选题
    In a purifier changing to a gravity disc with larger hole diameter will move the interface towards the ().
    A

    bowl periphery

    B

    bowl center

    C

    upper surface

    D

    lower surface


    正确答案: D
    解析: 暂无解析

  • 第8题:

    单选题
    You are using an Automatic Storage Management (ASM) instance to manage the files of your production database. You have two disk groups, DG1and DG2with one device each. In the parameter file of the production database, the following parameters have been specified:  DB_CREATE_ONLINE_LOG_DEST_1 = ’+dg1’  DB_CREATE_ONLINE_LOG_DEST_2 = ’+dg2’  What would be the impact of this setting?()
    A

     When a new log group is added, it would have one member in each disk group.

    B

     When a new log group is added, it would have two members in each disk group.

    C

     When a new tablespace is added, it would have one data file in each disk group.

    D

     When a new log file is added, it would have one member spread across the disk groups.


    正确答案: C
    解析: 暂无解析

  • 第9题:

    单选题
    The North Pole is surrounded by land, while the South Pole is surrounded by the Antarctic Ocean.So scientists thought that______.
    A

    most of the ice melted in the Northern hemisphere

    B

    most of the ice melted in the Southern hemisphere

    C

    The North Pole is colder than the South Pole

    D

    The South Pole is colder than the North Pole


    正确答案: D
    解析:

  • 第10题:

    单选题
    The gap in the ozone hole over the North Pole can expand each summer enough, that it exposes regions as far south as Sweden by heightened UV radiation, also increasing rates of skin cancer in the northern regions by as much as 50 percent.
    A

    that it exposes regions as far south as Sweden by heightened UV radiation, also increasing

    B

    that regions as far south as Sweden have been exposed to heightened UV radiation, as well as having increased

    C

    to expose regions as far south as Sweden to heightened UV radiation, increased

    D

    to expose regions as far south as Sweden to heightened UV radiation and increase

    E

    that exposure to heightened UV radiation in regions as far south as Sweden, as well as increasing


    正确答案: C
    解析:
    A项中“exposed…by”搭配错误;B中从句的主语有误;C、E项中从句的结构错误,故本题选D项。

  • 第11题:

    共用题干
    Touring the Antarctic Brings Danger

    1 Ship tourism to Antarctica is on the rise.More than 35,000 tourists are expected to visit Antarctica
    this spring and summer. In 1992一1993,6,750 visited Antarctica,according to the Antarctic Treaty
    Secretariat. All of this tourism,however,is posing great danger to both tourists and the environment.
    2 Among the tourist ships that visit the continent,the Explorer,a Canadian ship,was one of the first.
    Launched in 1969,it was built to ferry tourists to Antarctica.Last week,however,it became the first commer-
    cial passenger ship to sink beneath the polar region's waters.Fortunately,all of the passengers and crew
    members were evacuated(撤离)from the ship. However , the sunken ship threatens the Antarctic'S fragile
    environment.The ship was estimated to be holding 48,000 gallons of marine diesel fuel.
    3 The accident was not unanticipated.Both the US and the UK had warned at a conference of Antarc-
    tic treaty nations in May that the tourism situation in the region was a potential disaster. The US said in a pa-
    per,"People should take a hard look at tourism issues now,especially those related to vessel safety.""The
    increasing number of ships operating in Antarctica means that ships are under greater pressures to meet the
    time slots for visiting key sites,"the British government wrote in a paper at the meeting of treaty nations.
    4 Although the Antarctic seas are relatively calm,floating ice poses a potential threat to ships.The
    owner of the Explorer attributed the sinking to a fist-size hole in the hull created by ice.Many of the other
    large cruise ships now visiting Antarctica have little or no ice reinforcement in their designs.Such ships
    generally can only come to the continent at the height of summer. But the tourist rush is pushing vessels into
    dangerous situations.
    5 As a natural frontier,Antarctica is in a legal muddle.There are no obvious answers as to who is re-
    sponsible for dealing with the threat that tourism may cause to human life and the environment.
    6 Jim Barnes,executive director of the Antarctic and Southern Ocean Coalition,told the New York
    Times,"There'S no military or coast guard for Antarctica."He asked,"Do we want this(the Antarctic)to
    become Disneyland,or do we want some controls?"

    The accident of the Explorer's sinking is__________.
    A:safe
    B:being hit by floating ice
    C:pollute the sea
    D:foreseen
    E:unclear
    F:dealing with the threat

    答案:D
    解析:
    第一段前三句都在叙述南极游客数量上涨。最后一句引出下文。由此可知本段主要 论述南极游客的增加。所以正确答案为B。
    第二段首先介绍“探索者”号轮船,接着说它上个星期沉没的情况以及带来的影响。曲 此可知本段主要论述“探索者”号轮船的沉没。所以最佳选项为A。
    第三段首先说这一事故并非不可预见,然后说美国和英国在南极条约国的会议上已红 警告过该地区的旅游情况可能导致灾难的发生。最后分别描述了美国和英国的意见。由此司 知本段论述的是其他国家在事故发生之前发出的警告:所以正确答案为E。
    本段第一句为中心句:虽然南极洲的海面相对平静,但是浮冰对轮船有潜在威胁。接 着详细说明很多大游轮都没有或几乎没有抗冰方面的强化设计,这会给大量游轮带来威胁。 可知本段论述的是潜在的危险,所以最佳答案为D。
    第二段提到了“探索者”号轮船上的船员和乘客,该段第四句说:幸运的是,所有游客和 船员都从船上撤退了。由此可知船员和游客都安全。所以正确答案为A。
    第三段第一句说,这个事故不是不可预料的,说明这个事故可以预料,后文提到美国和 英国早就提出了警告。由此可知正确答案为D。
    第四段第一句提到南极洲的浮冰给客轮带来潜在的威胁。所以正确答案为B。
    第五段第二句说,关于谁应对旅游可能给人的生命和环境带来的威胁负责,没有明确 的答案。由此可知正确答案为E。

  • 第12题:

    共用题干
    Black Holes

    1 Black holes can be best described as a sort of vacuum,sucking up everything in space.Scientists
    have discovered that black holes come from an explosion of huge stars.Stars that are near death can no longer
    burn due to loss of fuel , and because its temperature can no longer control the gravitational(重力的)force,
    hydrogen ends up putting pressure onto the star's surface until it suddenly explodes then collapses.
    2 Black holes come from stars ihat are made of hydrogen,other gases and a few metals.When these
    explode it can turn into a stellar-mass(恒星质量) black hole , which can only occur if the star is large enough
    (should be bigger than the sun)for the explosion to break it into pieces,and the gravity starts to compact
    every piece into the tiniest particle.Try to see and compare:if a star that's ten times the size of the sun ends
    up being a black hole that's no longer than 70 kilometers,then the Earth would become a black hole that'S
    only a fraction of an inch!
    3 Objects that get sucked in a black hole will always remain there,never to break free.i1it remember
    that black holes can only gobble up(吞噬)objects within a specific distance to it.It's possible for a large
    star near the sun to become a black hole,but the sun will continue to stay in place.Orbits(轨道)do not
    change because the newly formed black hole contains exactly the same amount of mass as when it was a star,
    only this time its mass is totally contracted that it can end up as no bigger than a state.
    4 Sofar,astronomers have figured out that black holes exist because of Albert Einstcin's theory of
    relativity.In the end,through numerous studies,they have discovered that black holes truly exist.Since black
    holes trap light and do not give off light,it is nearly impossible to detect black holes via a telescope.But
    astronomers continue to study galaxies(银河系), space and the solar system to understand how black holes
    might evolve.It is possible that black holes can exist for millions of years,and later contribute to a bigger
    process in galaxies,which can eventually lead to creation of new entities(实体).Scientists also credit black
    holes as helpful in learning how galaxies began to form.

    A newly formed black hole and the star it comes from are of__________.
    A:the existence of black holes
    B:the creation of new entities
    C:the same amount of mass
    D:an fraction of an inch
    E:a fraction of an inch
    F:the tiniest particle

    答案:C
    解析:
    第一段描述了什么是黑洞,以及它产生的缘由―巨型恒星爆炸,并叙述了恒星爆炸的 原因和简要过程。再看选项,只有F项符合题意。
    第二段的主要内容是:恒星来自由氢气、其他气体和一些金属组成的恒星;当这些物质 爆炸时,恒星就变成了质量与原先的恒星等同的黑洞,恒星的每个碎片都被重力压缩成极小的 颗粒。观察选项,似乎E、F两项都可选,但一则上一小题只能选F项,二则此段虽也讲了黑洞 是怎么形成的,但比较侧重黑洞形成过程中,原来的恒星变成极小的颗粒。由第三段最后一句 也可知,这些颗粒的质量总和与原来的恒星一样,正是这些颗粒使黑洞有极大的吸附性,而成 其为“黑洞”。因此,黑洞就是由这些极小却质量巨大、吸附性极强的颗粒构成的。故选E。
    第三段描述了黑洞极大的吸附性,及其具有如此大的吸附性的原因。黑洞形成后,周 围一定距离内的几乎一切东西都会被吞噬而难以逃脱,故选A。
    第四段主要讲黑洞存在的依据及科学家们的研究和设想。故选B。
    由第一段第二句“...black holes come from an explosion of huge stars.”可知答案。
    由第二段第二句后半部分“...the gravity starts to compact every piece into the tiniestparticle”可知答案。
    由第三段最后一句“…the newly formed black hole contains exactly the same amount of mass as when it was a star...”可知答案。
    由第四段第一句话可知答案。

  • 第13题:

    共用题干
    Touring the Antarctic Brings Danger

    1 Ship tourism to Antarctica is on the rise.More than 35,000 tourists are expected to visit Antarctica
    this spring and summer. In 1992一1993,6,750 visited Antarctica,according to the Antarctic Treaty
    Secretariat. All of this tourism,however,is posing great danger to both tourists and the environment.
    2 Among the tourist ships that visit the continent,the Explorer,a Canadian ship,was one of the first.
    Launched in 1969,it was built to ferry tourists to Antarctica.Last week,however,it became the first commer-
    cial passenger ship to sink beneath the polar region's waters.Fortunately,all of the passengers and crew
    members were evacuated(撤离)from the ship. However , the sunken ship threatens the Antarctic'S fragile
    environment.The ship was estimated to be holding 48,000 gallons of marine diesel fuel.
    3 The accident was not unanticipated.Both the US and the UK had warned at a conference of Antarc-
    tic treaty nations in May that the tourism situation in the region was a potential disaster. The US said in a pa-
    per,"People should take a hard look at tourism issues now,especially those related to vessel safety.""The
    increasing number of ships operating in Antarctica means that ships are under greater pressures to meet the
    time slots for visiting key sites,"the British government wrote in a paper at the meeting of treaty nations.
    4 Although the Antarctic seas are relatively calm,floating ice poses a potential threat to ships.The
    owner of the Explorer attributed the sinking to a fist-size hole in the hull created by ice.Many of the other
    large cruise ships now visiting Antarctica have little or no ice reinforcement in their designs.Such ships
    generally can only come to the continent at the height of summer. But the tourist rush is pushing vessels into
    dangerous situations.
    5 As a natural frontier,Antarctica is in a legal muddle.There are no obvious answers as to who is re-
    sponsible for dealing with the threat that tourism may cause to human life and the environment.
    6 Jim Barnes,executive director of the Antarctic and Southern Ocean Coalition,told the New York
    Times,"There'S no military or coast guard for Antarctica."He asked,"Do we want this(the Antarctic)to
    become Disneyland,or do we want some controls?"

    Who is responsible for the Antarctic's threat is_________.
    A:safe
    B:being hit by floating ice
    C:pollute the sea
    D:foreseen
    E:unclear
    F:dealing with the threat

    答案:E
    解析:
    第一段前三句都在叙述南极游客数量上涨。最后一句引出下文。由此可知本段主要 论述南极游客的增加。所以正确答案为B。
    第二段首先介绍“探索者”号轮船,接着说它上个星期沉没的情况以及带来的影响。曲 此可知本段主要论述“探索者”号轮船的沉没。所以最佳选项为A。
    第三段首先说这一事故并非不可预见,然后说美国和英国在南极条约国的会议上已红 警告过该地区的旅游情况可能导致灾难的发生。最后分别描述了美国和英国的意见。由此司 知本段论述的是其他国家在事故发生之前发出的警告:所以正确答案为E。
    本段第一句为中心句:虽然南极洲的海面相对平静,但是浮冰对轮船有潜在威胁。接 着详细说明很多大游轮都没有或几乎没有抗冰方面的强化设计,这会给大量游轮带来威胁。 可知本段论述的是潜在的危险,所以最佳答案为D。
    第二段提到了“探索者”号轮船上的船员和乘客,该段第四句说:幸运的是,所有游客和 船员都从船上撤退了。由此可知船员和游客都安全。所以正确答案为A。
    第三段第一句说,这个事故不是不可预料的,说明这个事故可以预料,后文提到美国和 英国早就提出了警告。由此可知正确答案为D。
    第四段第一句提到南极洲的浮冰给客轮带来潜在的威胁。所以正确答案为B。
    第五段第二句说,关于谁应对旅游可能给人的生命和环境带来的威胁负责,没有明确 的答案。由此可知正确答案为E。

  • 第14题:

    共用题干
    Black Holes

    Most scientists agree that black holes exist but are nearly impossible to locate.A black hole
    in the universe is not a solid object, like a planet, but it is shaped like a sphere(球体).
    Astronomers(天文学家)think that at the center of a black hole there is a single point in space
    with infinite(无限的)density(稠密).This single point is called a singularity(奇点).If the
    singularity theory is correct,it means that when a massive star collapses,all the material in it
    disappears into the singularity.The center of a black hole would not really be a hole at all,but
    an infinitely dense point.Anything that crosses the black hole is pulled in by its great gravity.
    Although black holes do exist,they are difficult to observe.These are the reasons.
    No light or anything else comes out of black holes.As a result,they are invisible to a telescope.
    In astronomical terms,black holes are truly tiny.For example,a black hole formed by the collapse of a giant star would have an event horizon(视界)only 18 miles across.
    The nearest black holes would be dozens of light years away from Earth.One light
    year is about 6 trillion(万亿)miles. Even the most powerful telescopes could not pick out
    an object so small at such a great distance.
    In 1994 the Hubble Space Telescope provided evidence that black holes exist. There are
    still answers to be found,however,so black holes remain one of the mysteries of the universe.

    Black holes are part of space.
    A:Right
    B:Wrong
    C:Not mentioned

    答案:A
    解析:

  • 第15题:

    共用题干
    Black Holes

    Most scientists agree that black holes exist but are nearly impossible to locate.A black hole
    in the universe is not a solid object, like a planet, but it is shaped like a sphere(球体).
    Astronomers(天文学家)think that at the center of a black hole there is a single point in space
    with infinite(无限的)density(稠密).This single point is called a singularity(奇点).If the
    singularity theory is correct,it means that when a massive star collapses,all the material in it
    disappears into the singularity.The center of a black hole would not really be a hole at all,but
    an infinitely dense point.Anything that crosses the black hole is pulled in by its great gravity.
    Although black holes do exist,they are difficult to observe.These are the reasons.
    No light or anything else comes out of black holes.As a result,they are invisible to a telescope.
    In astronomical terms,black holes are truly tiny.For example,a black hole formed by the collapse of a giant star would have an event horizon(视界)only 18 miles across.
    The nearest black holes would be dozens of light years away from Earth.One light
    year is about 6 trillion(万亿)miles. Even the most powerful telescopes could not pick out
    an object so small at such a great distance.
    In 1994 the Hubble Space Telescope provided evidence that black holes exist. There are
    still answers to be found,however,so black holes remain one of the mysteries of the universe.

    The center of a black hole is empty.
    A:Right
    B:Wrong
    C:Not mentioned

    答案:B
    解析:

  • 第16题:

    You are using an Automatic Storage Management (ASM) instance to manage the files of your production database. You have two disk groups, DG1 and DG2, with one device each. In the parameter file of the production database, the following parameters have been specified: DB_CREATE_ONLINE_LOG_DEST_1 = ’+dg1’  DB_CREATE_ONLINE_LOG_DEST_2 = ’+dg2’  What would be the impact of this setting?()

    • A、When a new log group is added, it would have one member in each disk group.
    • B、When a new log group is added, it would have two members in each disk group.
    • C、When a new tablespace is added, it would have one data file in each disk group.
    • D、When a new log file is added, it would have one member spread across the disk groups.

    正确答案:A

  • 第17题:

    单选题
    Consequently, more than 100 cities in the United States still have levels of carbon monoxide, particulate matter, and ozone that()legally established limits.
    A

    succeed

    B

    proceed

    C

    exceed

    D

    excess


    正确答案: B
    解析: 暂无解析

  • 第18题:

    单选题
    The hydrocarbons they do emit are less likely to()ozone.
    A

    general

    B

    generation

    C

    generate

    D

    generous


    正确答案: D
    解析: 暂无解析

  • 第19题:

    问答题
    Scientists have long assumed that most of the ice that melted was in the Northern hemisphere(半球) during the 30,000-year long ice age.

    正确答案:
    解析:

  • 第20题:

    单选题
    According to the information given in the passage, sulfur dioxide emissions are linked to all except which of the following phenomena?
    A

    Reduced visibility in the eastern United States

    B

    Damage to the ozone hole

    C

    Increased rates of asthma

    D

    Acid rain

    E

    Damaged forests


    正确答案: D
    解析:
    细节题。文章最后一段第二句中提到了二氧化硫的危害包括:the health costs of increased rates of asthma and lung cancer in high-emissions areas; the environmental costs of acid-scarred forests and lakes; the aesthetic costs of a haze of sulfur dioxide cutting visibility across the eastern United States…,其中不涉及B 项,故本题选B项。