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Part IV 完形填空

Cloze · 10 分

In this part, there is a passage with ten blanks. For each blank there are four choices marked A, B, C, and D. Choose the best answer for each blank.

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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. How many people can live on the face of the earth? No one knows the answer. It depends on how much food people can grow without destroying the environment. More people now exist than ever before, and the population keeps growing. Every 15 seconds, about 100 babies are born. Before the end of this century, the earth may hold 10 billion people! To feed everyone, farmers must grow more food. They are trying to do so. World food production has gradually risen over the years. In some parts of the world, however , the population is growing faster than the food supply. Some experts fear the world will not be able to produce enough food for a population that never stops increasing. To grow more crops on the same amount of land, farmers use fertilizers and pesticides (杀虫剂). Some plant new kinds of grains that produce more food. These things help— but they don't provide perfect solutions. The chemicals in fertilizers and pesticides can pollute water supplies. The new seeds developed by scientists have reached the limit of what they can produce. When hungry people can get no more out of existing field, they clear trees from hills and forests for new farmland, and in doing so they expose the soil. Then rain and floods may strip the topsoil from fields. This process is called erosion. Each year erosion steals billions of tons of topsoil from farmers.

译文 / 解析

本文介绍了要解决世界人口吃饭问题，必须要种植更多的粮食，而为了要获得更多的粮 食，农民做出了一些努力，但是这些努力有时也会带来不利的影响。

地球表面到底能容纳多少人?没人知道答案。这取决于人们在不摧毁环境的情况下能 种植多少粮食。 现在世界人口比以前多得多，而且人口还在不断增长。每15秒钟就有100个孩子出生。 到20世纪末，世界人口将达到100亿! 为了养活每个人，农民必须要种更多的粮食。他们也正在这么做。世界粮食产量连年 增长。然而，在世界某些地方，人口的增长速度远远大于粮食产量。有些专家担心全世界将 无法生产足够多的粮食来养活不断增长的人口。 汇聚英才 为了在同样数量的土地上产出更多的粮食，农民们使用化肥和杀虫剂。有些选择种植 更高产量的新的作物。这些都有所助益——但不能提供完美的解决方案。化肥和杀虫剂中 的化学成分会污染水源。科学家培育的新种子已经达到了其最高产量限额。 当饥饿的人们无法从现有的土地上获得更多的时候，他们会砍掉山上的树和森林来开 发新的农田，这样做就将土地暴露了出来。然后雨水和洪水会把地表上层土冲走。这就是 水土流失。每年水土流失就从农民手中带走了几十亿吨的上层土。
    1. without
    2. by
    3. against
    4. for

    答案 A

    本题考查的是介词辨析。without"没有";by"通过";against" 反对";for"为了"。结合句意，"这取决于人们在不摧毁环境的情况下能种 植多少粮食"符合逻辑，只有A正确，

    1. ceases
    2. keeps
    3. stops
    4. stays

    答案 B

    本题考查的是动词词义辨析。cease"停止";keep"继续";stop "停下";stay"停留",代入句中，B项符合句意，

    1. maintain
    2. retain
    3. hold
    4. produce

    答案 C

    本题考查的是动词词义辨析。maintain"维持";retain"保留"; hold"持有，拥有，留下";produce"生产"。代入句中，C项符合句意，

    1. exhausted
    2. declined
    3. arisen
    4. risen

    答案 D

    本题考查的是动词词义辨析。exhaust"使疲劳";decline"下降； 衰落"; arise"呈现，出现";rise"上升"。代入句中，D项符合句意，

    1. however
    2. somehow
    3. anyway
    4. furthermore

    答案 A

    本题考查的是副词词义辨析。however"然而";somehow"以某 种方法";anyway"无论如何";furthermore"此外，而且"。代入句中，A项 符合句意，

    1. country
    2. nation
    3. population
    4. community

    答案 C

    本题考查的是名词词义辨析。country"国家";nation"国家；民 族";population"人口";community"社区"。代入句中，C项符合句意，故 选C。

    1. range
    2. amount
    3. number
    4. level

    答案 B

    本题考查的是名词词义辨析。range"范围";amount"数量"; number"数量";level"水平"。amount修饰不可数名词，number修饰可数名 词。此处land为不可数名词，所以要用amount,

    1. hence
    2. when
    3. but
    4. and

    答案 C

    本题考查的是关系词词义辨析。hence"因此，今后";when"当 ……时";but"然而",表转折；and"以及，和",表并列。代入句中，C项符 合句意，

    1. conclusion
    2. restriction
    3. goal
    4. limit

    答案 D

    本题考查的是名词词义辨析。conclusion"结论";restriction"限 制";goal"目标";limit"限额"。代入句中，D项符合句意，

    1. growing
    2. surviving
    3. remaining
    4. existing

    答案 D

    苯题考查的是形容词词义辨析。growing"增长的"; surviving "幸存的"; remaining"留下的"; existing"现存的"。代入句中，D项符合 句意，