Part IV 完形填空

Cloze (10 points) choices marked A, B, C and D. Choose the best answer for each blank and mark your answer on the Answer Sheet. London on the Thames, yes; but London in the Sea? No, thank you! Yet this could happen before 2060, unless steps are taken quite quickly, to prevent it. Asaresult of global warming, the sea level around the south east corner of England is expected to rise by 54cms in just halfacentury! And scientists now say that many parts of London will be at serious risk from flooding by the sea within protected years. It's not all of London that is in danger: just some parts to the east of the city. And they won't be under water all the time : just when there are very high tides. The low-lying suburbs beside the Thames in the East End of London are already protected from high tides byamassive barrier that stretches right across the river; but more defenses will be needed along the banks of the Thames to protectalarger area to the north of the river, and further east. Of course, there have always been occasional very high tides. A thousand years ago, there were big floods around London; and in 1953, before the Thames Barrier was built, over 300 people lost their lives in "the big flood"; but today the dangers are bigger. There are more people , more roads, more infrastructure. In the past, people did not build in places of flooding. Today, in southeast England, land is so expensive, that people build everywhere even in places that are liable to be flooded. Scientists also say that climate change will lead to warmer and drier summers in the south east of England. This will cause major changes in vegetation, and several species of native wildlife will not be able to survive. Wet in winter, hot in summer: will that be London in fifty years' time?

46. 1. besides
    2. unless
    3. in case
    4. so that

    答案 B

    本题考查逻辑词的使用。上句说"这可能在2060年之前就发生",后 一句说"迅速采取措施加以预防"。所以后者是在为避免前面事件发生需要的 让步条件。besides是"除此之外，还有……",表示补充；unless是"除非",表示让步关 系。in case是"以防",后面跟结果so that是"因此",表示结果。按句意unless表示让步条 件，最符合。

47. 1. extended
    2. exposed
    3. expected
    4. examined

    答案 C

    本题考查的是动词词义辨析。对于全球变暖对半个世后海平面的 影响，应该使用be expected表示人们的预测。extend表示"延伸";expose 表示"暴 露"; examine表示"检查"。只有expect"预计，认为"可以表示预测。

48. 1. by
    2. in
    3. from
    4. through

    答案 C

    本题考查的是介词的意义。这里risk与flood的关系是由洪水造成 的风险，故用from"来自于"更能表达两者的关系。

49. 1. all the time
    2. at the time
    3. at times
    4. from time to time

    答案 A

    本题考查短语的辨析。all the time 指"一直";at the time 指"在那 时"；at times指"偶尔";from time to time指"不时，有时"。根据句意，这里指并不 是一直在水下，

50. 1. prohibited
    2. protected
    3. preserved
    4. prevented

    答案 B

    本题考查的是动词词义辨析。根据本句后面的by介词短语及其附 带的定语从句可知，"利用横跨泰晤士河的巨大屏障来......海浪"。prohibit"(通过 法律、条例等)禁止";protect"保护";preserve"保存";prevent"防止"。be protected from 短语表达"保护...免受…"意思相符，

51. 1. many
    2. much
    3. most
    4. more

    答案 D

    本题考查的是形容词及其比较级的辨析。根据句意，在前面提到的 防御措施之外，还需要更多的防御，应选择"多"的比较级形式。

52. 1. usual
    2. occasional
    3. regular
    4. rare

    答案 B

    本题考查的是形容词词义辨析。根据常识和后文对较大的几次洪涝 灾害的描述，可知这样的大涨潮只是偶尔发生。usual"通常的";occasional "偶尔的"; casual "临时的";rare"很少的"。只有occasional意义最符合。

53. 1. person
    2. humankind
    3. individuals
    4. people

    答案 D

    本题考查的是名词词义辨析。本句强调现在更加危险的要素，有 更多的道路，更多的基础设施，写乏并列的，应该是有更多的人。person"人" 指一个人；humankind"人类";individual"个人",与集体相对应。people"人们", 是 很多人的集谷，泛指人们。

54. 1. lead to
    2. suffer from
    3. hold back
    4. result from

    答案 A

    本题考查的是动词短语的辨析。lead to"导致";suffer from "遭受"; hold back"抑制，退缩";result from"由…造成"。本句结合气候变化与变暖、变干 燥的因果关系，只有A选项符合语义。

55. 1. life
    2. lives
    3. wildlife
    4. wildlives

    答案 C

    本题考查的是词义辨析及用法。life"生命";lives"生命",是life 的复数； wildlife"野生动植物";因为wildlife是不可数名词，没有复数，所以D项排除。本句 是and连接的两个并列句，前面提到气候变化会造成植被的变化，可知后面对应的 应该是说几种当地野生植物的物种不再存在。species of 也可以提示是物种，而不 是生命。