单选题A disease known as chestnut blight wiped out large numbers of American chestnut trees.A alteredB penetratedC devaluedD destroyed
题目
altered
penetrated
devalued
destroyed
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更多“单选题A disease known as chestnut blight wiped out large numbers of American chestnut trees.A alteredB penetratedC devaluedD destroyed”相关问题
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第1题：
A large crowd assembled outside the American embassy.A: gathered
B: watched
C: shouted
D: walked答案：A解析：题干意为“美国使馆前面聚集了一大群人。” 句中划线词意为“集合”。A项gathered意为“（使）聚集，集合”；例句：Clouds gather be-fore a thunderstorm．在风暴来临之前云层聚集。B项意为“注视，注意”；C项意为“呼，喊，叫”;D项意为“走，步行，散步”；故选A。 -
第2题：
is known to the world,Mark Twain was a great American writer．A.As
B.Once
C.That
D.It答案：A解析：【考情点拨】考查定语从句。
【应试指导】句意：众所周知，马克·吐温是一位伟大的美国作家。as在该句中引导非限定性定语从句，在从句中作主语。 -
第3题：
A large crowd had assembled outside the American embassy.A:attacked
B:pushed
C:shouted
D:gathered答案：D解析：本句意思：“一大群人聚集在美国大使馆外。” gather:聚集，例如：In the evenings , we gathered around the fireplace and talked．晚上，我们聚在火炉边聊天。attack：袭击，例如：The Spanish Armada was sent to attack England in 1588.1588年西班牙无敌舰队被派遣去进攻英国。push：推开，例如：They pushed him into the car．他们把他推进了车里。shout：喊叫，例如：They heard him give a loud shout of astonishment．他们听见他惊奇地大叫一声。 -
第4题：
______is known to the world, Mark Twainis a great American writer.A.That
B.Which
C.As
D.It答案：C解析：考查非限制性定语从句。as作关系代词置于句首引导非限制性定语从句，修饰后面的主旬，表示“(正)如……，像……”。句意为“众所周知，马克·吐温是一位伟大的美国作家”。that不能引导非限制性定语从句；which引导非限制性定语从句时一般用于句中；若用it作形式主语的话后面则要加that，即Itis known to the world that…。故选C。 -
第5题：
单选题Dr. Fields received so large bill when he checked out of the hotel that he did not have enough money to pay for a taxi to the airport.Aso large bill
Bchecked out of
Cthat
Dpay for
正确答案： A解析： -
第6题：
单选题Between the steam dram and the smaller water dram below, large numbers of smaller diameter （） tubes are fitted.Afire
Bwater wall
Cgenerating
Ddown comer
正确答案： A解析： 暂无解析 -
第7题：
单选题Possessing beautiful beaches and a temperate climate, tourists flock to the Virgin Islands in large numbers.APossessing beautiful beaches and a temperate climate, tourists flock to the Virgin Islands in large numbers.
BBased on having beautiful beaches and a temperate climate, the Virgin Islands attract tourists in large numbers.
CSince it has beautiful beaches and a temperate climate, tourists flock to the Virgin Islands in large numbers.
DThe Virgin Islands, which possess beautiful beaches and a temperate climate, attract tourists in large numbers.
ETourists who value beautiful beaches and a temperate climate may flock to the Virgin Islands in large numbers.
正确答案： E解析：
A和B项修饰语的位置不正确。C项中“it”和“Virgin Islands”不一致。E项改变了原句的意思，只有D项没有错误。 -
第8题：
单选题Not one of the many books that Emmy checked out of the library about American quilting and domestic arts include the myths found in quilting history.Achecked out of the library about American quilting and domestic arts include the myths found in
Bchecked out of the library of American quilting and domestic arts include myths found in
Cchecked out of the library of American quilting and domestic arts includes myths found in
Dchecked out on American quilting and domestic arts was including myths found in
Echecked out of the library about American quilting and domestic arts includes the myths found in
正确答案： D解析：
A和B项主谓不一致。C项改变了句子本要表达的意思。D项中动词的时态不正确。 -
第9题：
单选题A large basin cut into the shore，closed off by a caisson，and used for dry docking of ships is known as a（）.Aslipway
Bgraving dock
Cground warp
Dcaisson dock
正确答案： C解析： 暂无解析 -
第10题：
单选题A fire _____ during the night and a large number of houses _____ to ashes.Abroke out, were burnt
Bwas broke out, were burnt
Cbroke out, burnt
Dset out, were burned
正确答案： C解析：
句意：夜里发生了一场火灾，许多房屋被烧成了灰烬。break out意为“爆发，突然发生”，不能用被动语态，因此B不对，房子被烧成灰烬是被动语态，并且前后时态要一致，此处都是过去时。 -
第11题：
单选题A large basin cut into the shore，closed off by a caisson，and used for drydocking of ships is known as a（）.Aslipway
Bgraving dock
Cground warp
Dcaisson dock
正确答案： B解析： 暂无解析 -
第12题：
单选题As a result of the epidemic of AIDS in Africa, _____.Athe life span for most of the people has been reduced by 40 years
Bmost young people have been infected with human immunodeficiency virus
Cpeople will have to learn to live with the disease for over 50 years
Dthe achievements made in preserving people’s health in the past will be wiped off
正确答案： D解析：
第四段第二句作者提到，到2025年艾滋病将成为非洲年轻人的最大杀手，它可以使一些国家人口的平均寿命降到40岁，仅艾滋病一项就会使过去50年在公共健康方面取得的成就化为乌有。 -
第13题：
The city centre was wiped out by the bomb.A: covered
B: destroyed
C: reduced
D: moved答案：B解析：题干意为“城市中心被炸弹攻陷。” 句中划线词意为“歼灭，攻陷". B项destroyed意为“破坏，摧毁，消灭，歼灭”；例句：We want to nurture the new project, not destroy it．我们要支持这个新工程，不要破坏它。A项 意为“覆盖，掩护”;C项意为“减少，降低”;D项意为“移动，搬动”；故选B。 -
第14题：
共用题干
Older Volcanic Eruptions
Volcanoes were more destructive in ancient history,not because they were bigger,but because the carbon dioxide they released wiped out life with greater ease.
Paul Wignall from the University of Leeds was investigating the link between volcanic eruptions and mass extinctions.Not all volcanic eruptions killed off large numbers of animals,but all the mass extinctions over the past 300 million years coincided with huge formations of volcanic rock.To his surprise,the older the massive volcanic eruptions were,the more damage they seemed to do.He calculated the"killing efficiency" for these volcanoes by comparing the proportion of life they killed off with the volume of lava（熔岩）that they produced.He found that size for size,older eruptions were at least 10 times as effective at wiping out life as their more recent rivals.
The Permian（二叠纪）extinction,for example,which happened 250 million years ago,is marked by floods of volcanic rock in Siberia that cover an area roughly the size of western Europe.Those volcanoes are thought to have pumped out about 10 gigatonnes of carbon as carbon dioxide.The global warming that followed wiped out 80 percent of all marine genera（种类）at the time,and it took 5 million years for the planet to recover.Yet 60 million years ago,there was another huge amount of volcanic activity and global warming but no mass extinction.Some animals did disappear but things returned to normal within ten thousand of years."The most recent ones hardly
have an effect at all,"Wignall says.He ignored the extinction which wiped out the dinosaurs 65 million years ago,because many scientists believe it was primarily caused by the impact of an asteroid（小行星）.He thinks that older volcanoes had more killing power because more recent life forms were better adapted to dealing with increased levels of CO2．
Vincent Courtill.ot,director of the Paris Geophysical Institute in France,says that Wignall's idea is provocative.But he says it is incredibly hard to do these sorts of calculations.He points out that the killing power of volcanic eruptions depends on how long they lasted.And it is impossible to tell whether the huge blasts lasted for tliousands or millions of years.He also adds that it is difficult to estimate how much lava prehistoric volcanoes produced,and that lava volume may not necessarily correspond to carbon dioxide emissions。How did Wignall calculate the killing power of those older volcanic eruptions?
A:By estimating how long they lasted.
B:By counting the dinosaurs they killed.
C:By studying the chemical composition of lava.
D:By comparing the proportion of life wiped out with the volume of lava produced.答案：D解析：由文章第一段可知，远古火山喷发更具破坏力，不是因为它们规模更大，而是因为它们释放出的二氧化碳更容易毁灭生命。故选A。
由文章第二段第四句话“He calculated the ‘ killing efficiency ' for those… they are produced.”可知，Wignall通过比较火山释放的熔岩的体积与杀死生命的比例计算这些火山的杀伤力。故选D0
由文章第三段倒数第二句话“He ignored the extinction which wiped out the dinosaurs 65 million years ago …”可知，恐龙是在6500万年前灭绝的。故选D。
由文章第三段倒数第二句话“… because many scientists believe it was primarily caused by the impact of an asteroid.”可知，Wignall没有提6500万年前恐龙的灭绝是否跟火山爆发有关是因为许多科学家认为恐龙的灭绝是由一颗小行星的影响造成的。由此可推断出关于恐龙灭绝的原因在科学家之间是有分歧的。故选D。
文章第一段直接点明了文章的主要论点。" Volcanoes were more destructive in ancient history..."（古代火山喷发更具破坏力）。故选B。 -
第15题：
Many large old houses have now been converted into flats.A:altered
B:shifted
C:bought
D:sold答案：A解析：本句话的意思是：“许多旧的大房子现在都已改建成了单元房。” convert: 转换、改变。alter：改变、更改，例如：We have to alter the house into a barn．我们不得不把房子改建成谷仓。shift：移动、挪动，例如：He stopped , shifting his cane to his left hand．他停了下来，将手杖移到左手。bought和sold是一对反义词buy和sell的过去式，表示买和卖的意思，例如：He bought/sold a pot yesterday．他昨天买了/卖了一把水壶。 -
第16题：
The rubbish should be collected on the poop deck and （）(处理) 25 miles off the shore.
- A、made up of
- B、disposed of
- C、worked out
- D、wiped out
正确答案:B -
第17题：
单选题A large group of stars revolving around a center is known as a（）.Acluster
Bshower
Cconstellation
Dgalaxy
正确答案： C解析： 暂无解析 -
第18题：
单选题_____is known to all, too much stress can cause disease.AWhich
BThat
CIt
DAs
正确答案： B解析： -
第19题：
单选题Why does the woman compare human memory to a hard disc drive?ABecause both can be wiped out by accidents.
BBecause both can be trained to work better.
CBecause both can be expanded.
正确答案： A解析： 对话中提到like a hard disc drive, our memories can become infected or even wiped out by accidents，意为：像硬盘驱动器一样，我们的记忆也会被感染，甚至也会因意外事故被抹掉，因此A项为正确答案。 -
第20题：
单选题Laying out a line in successive circles flat on deck with the bitter end in the center is known as（）.Acoiling
Bfaking
Cflemishing
Dlining
正确答案： C解析： 暂无解析 -
第21题：
单选题As is well known, eating too much fat can _____ heart disease and cause high blood pressure.Aadd to
Battend to
Ccontribute to
Dapply to
正确答案： A解析：
句意：众所周知，食用过多脂肪易引起心脏病和高血压。contribute to导致，引起。add to加上。attend to专心，注意。apply to将……应用于。 -
第22题：
单选题The American and the British______a large number of social customs.Ajoin
Btake
Cshare
Dmake
正确答案： D解析： -
第23题：
单选题What is a drawback to using the IntServ model？（）ARSVP that signals QoS requests per individual flow
Bnot scalable to large implementations
Cadmission control not supported
Duse of dynamic port numbers
EUDP not supported
正确答案： B解析： 暂无解析