参考答案和解析
正确答案:D
更多“What form of ice is of land origin ________.A.ShugaB.FloeC.SpiculeD.Bergy bit ”相关问题
  • 第1题:

    共用题干
    第一篇

    Water Resources on the Earth

    The second most important constituent(构成成分)of the biosphere(生物圈)is liquid water. This can only exist in a very narrow range of temperatures,since water freezes at 0℃and boils a 100℃.Life as we know it would only be possible on the surface of a planet which had temperature: somewhere within this narrow range.
    The earth's supply of water probably remains fairly constant in quantity.The total quantity of water is not known very accurately,but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers.Most of it is in the form of the salt water of the oceans一about 97 percent. The rest is fresh.But three-quarters of this is in the form of ice at the poles and or mountains and cannot be used by living systems until melted.Of the remaining fraction,which h somewhat less than one percent of the whole.There is 10—20 times as much stored underground water as there is actually on the surface.There is also a tiny,but extremely important fraction of the water supply which is present as water vapour in the atmosphere.
    Water vapour in the atmosphere is the channel through which the whole water circulation(循环) of the biosphere has to pass.Water evaporated(蒸发)from the surface of the oceans,from lakes and rivers and from moist(潮湿的)earth is added to it. From it the water comes out again as rain or snow,falling on either the sea or the land. There is,as might be expected, a more intensive evaporation per unit area over the sea and oceans than over the land,but there is more rainfall over the land than over the oceans and the balance is restored by the run off from the land in the form of rivers.

    Most of the fresh water on Earth________.
    A:is in the form of ice at the poles and on mountains
    B:is stored underground
    C:is found in rivers and lakes
    D:comes from the rain

    答案:A
    解析:
    文章第一段的第二句讲到液态水“only exist in a very narrow range of temperatures",虽然B(我们星球的表面)也有点道理,但是液态水对温度的要求很高,并非地球的所有表面都有液态水存在,所以答案D正确。
    第二段第一句提到地球上水的供给“remains fairly constant in quantity",数量上是恒定的,它就没有增加也不会减少,只不过会以不同的形态出现,所以选择B(保持不变)。
    问题是“地球上绝大部分淡水以什么形式出现?”第二段中间提到淡水时,说到“three-quarters of this is in the form of ice at the poles and on mountains",即3/4的淡水以冰的形式存在于两极和高山中,后面提到剩余部分的淡水存在于地下,但占比少于1%,所以选项A正确。
    词义辫析题, fraction有“小部分”的意思,考虑到前面提到地球97%的水以海洋咸水的形式存在,剩下的3%则以冰的形式存在于两极和高山,余下的自然不多,所以选B。
    第三段的最后一句说到“there is more rainfall over the land than over the oceans”,陆地的降雨比海洋要多,但没有提到河流和山脉的降雨比较,所以C正确。大气中的水蒸气是整个生物圈的水循环必经的途径。水从海洋的表面、湖泊、河流和潮湿的泥土中蒸发出来并补充到大气中。水以雨或雪的形式再次出现,降落在海洋或陆地上。可以预料到的是,海洋上空每单位面积的水蒸气比在陆地上空更为密集,但是,陆地比海洋有更多的降雨,水在陆地上以河流的形式流出以保持水资源的平衡。

  • 第2题:

    以下配置属于科鲁兹在同级车中独有的是()

    • A、大内存马牌ABS
    • B、ice-blue背光设计
    • C、GM-LAN
    • D、安吉星

    正确答案:A,B,C,D

  • 第3题:

    单选题
    Some paleontologists claim that the discovery of what appear to be feathers in the fossil of an Archosaur could force a revision of current theories on the phylogeny of Archosaurs, alter conceptions of dinosaur skin surfaces, and require scholars to credit birds with a far earlier orion than previously thought.
    A

    require scholars to credit birds with a far earlier origin than previously thought

    B

    scholars may be required to credit birds with a far earlier origin than previously thought

    C

    require a crediting by scholars of birds with a far earlier origin than previously thought

    D

    compared to what was previously thought,  require scholars to credit birds with a far earlier origin

    E

    crediting birds with a far earlier origin than scholars had previously though


    正确答案: A
    解析:
    几个选项相比来看,A项在语法和句法上都比较合适,故本题选A项。

  • 第4题:

    单选题
    Which statement concerning the navigation of a vessel in ice is FALSE?()
    A

    Anchoring in the presence of ice is not recommended except in an emergency

    B

    Towing a vessel through an ice field is not recommended except in an emergency

    C

    The Free and Proceed system of escorting a beset vessel cuts down on the number of freeing operations

    D

    When anchoring in ice,it is advisable to increase the scope of the chain over what is normally used for non-icing conditions


    正确答案: C
    解析: 暂无解析

  • 第5题:

    单选题
    What form of ice is of land origin?()
    A

    Shuga

    B

    Floe

    C

    Spicule

    D

    Bergy bit


    正确答案: C
    解析: 暂无解析

  • 第6题:

    单选题
    What generally occurs when the land is cooler than the nearby water? ()
    A

    A land breeze

    B

    A sea breeze

    C

    A norther

    D

    A prevailing westerly


    正确答案: A
    解析: 暂无解析

  • 第7题:

    单选题
    According to the passage, which of the following is true of the ratios of oxygen isotopes in ocean sediments?
    A

    They indicate that sediments found during an ice age contain more calcium carbonate than sediments formed at other times.

    B

    They are less reliable than the evidence from rocks on land in determining the volume of land ice.

    C

    They can be used to deduce the relative volume of land ice that was present when the sediment was laid down.

    D

    They are more unpredictable during an ice age than in other climatic conditions.

    E

    They can be used to determine atmospheric conditions at various times in the past.


    正确答案: E
    解析:
    细节题。第二段第二句指出:relative land-ice volume for a given period can be deduced from the ratio of two oxygen isotopes, 16 and 18, found in ocean sediments,故可知洋底的氧同位素比例可以用来推算形成时陆冰的体积,故本题应选C项。

  • 第8题:

    单选题
    What is the purpose of the passage?
    A

    To tell people not to do dangerous sports.

    B

    To explain what volcano surfing and land diving are.

    C

    To talk about the world’s best volcano surfer and land diver.

    D

    To compare activities in Vanuatu with sports in New Zealand.


    正确答案: B
    解析:
    本文的脉络清晰,主要介绍了Vanuatu的两种危险的运动,即火山冲浪和陆地跳级。故选B项。

  • 第9题:

    单选题
    The author of the passage would be most likely to agree with which of the following statements about the Milankovitch theory?
    A

    It is the only possible explanation for the ice ages.

    B

    It is too limited to provide a plausible explanation for the ice ages, despite recent research findings.

    C

    It cannot be tested and confirmed until further research on volcanic activity is done.

    D

    It is one plausible explanation, though not the only one, for the ice ages.

    E

    It is not a plausible explanation for the ice ages, although it has opened up promising possibilities for future research.


    正确答案: E
    解析:
    推断题。最后一段第一句指出:…it is important to note that other factors…could potentially have affected the climate,可知虽然作者认为Milankovitch理论为冰淇提供了一种解释,但是它并不是唯一的,故D项的叙述是正确的。

  • 第10题:

    单选题
    Where do polar bears usually hunt seals?
    A

    On land.

    B

    In open water.

    C

    In openings in the sea ice.

    D

    At the bottom of the sea.


    正确答案: B
    解析:

  • 第11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12题:

    单选题
    A light,feathery deposit of ice caused by the sublimation of water vapor directly into the crystalline form,on objects whose temperatures are below freezing,is called().
    A

    dew

    B

    frost

    C

    glaze

    D

    snow


    正确答案: D
    解析: 暂无解析

  • 第13题:

    共用题干
    第一篇

    Water Resources on the Earth

    The second most important constituent(构成成分)of the biosphere(生物圈)is liquid water. This can only exist in a very narrow range of temperatures,since water freezes at 0℃and boils a 100℃.Life as we know it would only be possible on the surface of a planet which had temperature: somewhere within this narrow range.
    The earth's supply of water probably remains fairly constant in quantity.The total quantity of water is not known very accurately,but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers.Most of it is in the form of the salt water of the oceans一about 97 percent. The rest is fresh.But three-quarters of this is in the form of ice at the poles and or mountains and cannot be used by living systems until melted.Of the remaining fraction,which h somewhat less than one percent of the whole.There is 10—20 times as much stored underground water as there is actually on the surface.There is also a tiny,but extremely important fraction of the water supply which is present as water vapour in the atmosphere.
    Water vapour in the atmosphere is the channel through which the whole water circulation(循环) of the biosphere has to pass.Water evaporated(蒸发)from the surface of the oceans,from lakes and rivers and from moist(潮湿的)earth is added to it. From it the water comes out again as rain or snow,falling on either the sea or the land. There is,as might be expected, a more intensive evaporation per unit area over the sea and oceans than over the land,but there is more rainfall over the land than over the oceans and the balance is restored by the run off from the land in the form of rivers.

    There is more of rainfall________.
    A:over the mountains than over the rivers
    B:over the rivers than over the mountains
    C:over the land than over the oceans
    D:over the oceans than over the land

    答案:C
    解析:
    文章第一段的第二句讲到液态水“only exist in a very narrow range of temperatures",虽然B(我们星球的表面)也有点道理,但是液态水对温度的要求很高,并非地球的所有表面都有液态水存在,所以答案D正确。
    第二段第一句提到地球上水的供给“remains fairly constant in quantity",数量上是恒定的,它就没有增加也不会减少,只不过会以不同的形态出现,所以选择B(保持不变)。
    问题是“地球上绝大部分淡水以什么形式出现?”第二段中间提到淡水时,说到“three-quarters of this is in the form of ice at the poles and on mountains",即3/4的淡水以冰的形式存在于两极和高山中,后面提到剩余部分的淡水存在于地下,但占比少于1%,所以选项A正确。
    词义辫析题, fraction有“小部分”的意思,考虑到前面提到地球97%的水以海洋咸水的形式存在,剩下的3%则以冰的形式存在于两极和高山,余下的自然不多,所以选B。
    第三段的最后一句说到“there is more rainfall over the land than over the oceans”,陆地的降雨比海洋要多,但没有提到河流和山脉的降雨比较,所以C正确。大气中的水蒸气是整个生物圈的水循环必经的途径。水从海洋的表面、湖泊、河流和潮湿的泥土中蒸发出来并补充到大气中。水以雨或雪的形式再次出现,降落在海洋或陆地上。可以预料到的是,海洋上空每单位面积的水蒸气比在陆地上空更为密集,但是,陆地比海洋有更多的降雨,水在陆地上以河流的形式流出以保持水资源的平衡。

  • 第14题:

    What are the mandatory, well-known BGP attributes?()

    • A、origin,AS-path,next-hop
    • B、AS-path,origin,MED
    • C、AS-path,origin,weight
    • D、AS-path,weight,MED

    正确答案:A

  • 第15题:

    单选题
    Multi-year ice is the hardest sea ice and should be avoided if possible. It is recognizable because of what tone to its surface color? ()
    A

    Greenish

    B

    Bluish

    C

    Grey

    D

    Grey-white


    正确答案: B
    解析: 暂无解析

  • 第16题:

    单选题
    What describes a flood current().
    A

    Horizontal movement of the water toward the land after high tide

    B

    Horizontal movement of the water toward the land after low tide

    C

    Horizontal movement of the water away from the land following high tide

    D

    Horizontal movement of the water away from the land following low tide


    正确答案: D
    解析: 暂无解析

  • 第17题:

    单选题
    A

    To examine the chemical elements in the Ice Age.

    B

    To look into the pattern of solar wind activity.

    C

    To analyze the composition of different trees.

    D

    To find out the origin of carbon-14 on Earth.


    正确答案: A
    解析:
    细节题。从录音结尾来看,科学家的主要目的是通过对树木年轮的考查来研究“solar wind activity”。

  • 第18题:

    单选题
    What are the mandatory,well-known BGP attributes?()
    A

    origin,AS-path,next-hop

    B

    AS-path,origin,MED

    C

    AS-path,origin,weight

    D

    AS-path,weight,MED


    正确答案: A
    解析: 暂无解析

  • 第19题:

    单选题
    A similar wrong idea is that fish and ice cream when ____ at the same time form a poisonous combination.
    A

    eating

    B

    being eaten

    C

    eaten

    D

    to be eaten


    正确答案: B
    解析:

  • 第20题:

    单选题
    After more than one hundred years of steel production at Hallside, ______.
    A

    the land could not be used for anything.

    B

    it was impossible to use the land to build on.

    C

    the land could then be built on.

    D

    the land could be used for any purpose.


    正确答案: D
    解析:
    根据题干中的关键词one hundred years,steel production可定位到C段“The surrounding land had become heavily compacted and was too contaminated with heavy metals such as chromium, cadmium and leads to support any kind of brick and mortar development”,可知该厂的土地在经过100年的钢铁生产之后很难再用作建筑用地了,故选项B是正确的。

  • 第21题:

    单选题
    A

    It affects the growth of trees.

    B

    It has been increasing since the Ice Age.

    C

    It is determined by the chemicals in the air.

    D

    It follows a certain cycle.


    正确答案: A
    解析:
    细节题。录音明确提到“the sun has cycles”,最后说明“The scientists concluded that solar wind activity must follow the same cycle.”可推断“Solar wind activity follows a certain cycle”。故选D。
    【录音原文】
      You can tell the age of a tree by counting its rings. But these records of a tree’s life really say a lot more. Scientists are using tree rings to learn what’s been happening on the sun’s surface for the last 10,000 years. Each ring represents a year of growth. As a tree grows, it adds a layer to its trunk, taking up chemical elements from the air. By looking at the elements in the rings from a given year, scientists can tell what elements were in the air that year. Doctor Stevenson is analyzing one element: carbon 14 in rings from both living and dead trees. Some of the rings go back almost 10,000 years to the end of the Ice Age. When Stevenson followed the carbon 14 trail back in time, he found carbon 14 levels change with the intensity of solar burning. You see, the sun has cycles. Sometimes it burns fiercely, at other times it’s relatively calm. During the sun’s violent periods it throws off charged particles in fast moving streams called solar winds. The particles interfere with the formation of carbon 14 on Earth. When there’s more solar wind activity, less carbon 14 is produced. Ten thousand years of tree rings show that the carbon 14 level rises and falls about every 420 years. The scientists concluded that solar wind activity must follow the same cycle.
    Questions 1 to 3 are based on the passage you have just heard.
    1. What’s the purpose of the scientists in studying tree rings?
    2. What affects the amount of carbon 14 on Earth?
    3. What do we learn from the passage about solar wind activity?

  • 第22题:

    单选题
    What will happen with the freshening of waters?
    A

    Sea-ice formation will reduce,

    B

    Antarctic ice shelves will melt.

    C

    Rainfall will increase,

    D

    The circulation of deep waters will reduce.


    正确答案: C
    解析:
    根据录音可知,越来越多的北极径流和降水(Arctic runoff and rainfall),南极冰架的融化(melt of Antarctic ice shelves)和海冰形成的减少都在导致海水淡化。海水淡化将会减缓北大西洋和南部海洋的热盐环流,同时减弱深水水域的环流(This will slow the thermohaline circulations of the North Atlantic and Southern Oceans and reduce the circulation of deep waters.),A、B和C项的内容都已经发生了,不应该用将来时,所以只有D项正确。

  • 第23题:

    多选题
    94 What are three characteristics of the CALL_FORM built-in?()
    A

    It is an unrestricted procedure.

    B

    It is valid in Enter Query mode.

    C

    It invokes a form in a modal window.

    D

    It can only invoke a form in Query Only mode.

    E

    It enables you to start a new database session.

    F

    It enables free navigation between all opened form sin an application.


    正确答案: B,F
    解析: 暂无解析