题目内容
14．The national park has a large collection of wildlife，_________ from butterflies to elephants．（ ）| A． | ranging | B． | range | C． | to range | D． | ranged |
分析 国家公园里有大量的野生动物，从蝴蝶到大象都有．
解答 答案：A
句中有逗号分隔，没有连词，要用非谓语动词；range与collection构成主谓关系，要用表示主动的现在分词来构成；句意表达的是一般事实，不是未发生的动作，不能用不定式．故选A．
点评 现在分词是非谓语动词的一种，表达主动或进行；过去分词表达被动或完成；动词不定式表达未发生的动作．学习时，要注意区分和掌握．
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B．The insects gather under the table．
C．The plants get ready to fight back．
D．The perfumes attract natural enemies．
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A．predict natural disasters
B．protect themselves against insects
C．talk to one another intentionally
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B．People have stronger senses than before．
C．The world is more complex than it seems．
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Scientists have found that all kinds of plants give out VOCs when being attacked．It's a plant's way of crying out．But is anyone listening？Apparently．Because we can watch the neighbors react．
Some plants pump out smelly chemicals to keep insects away．But others do double duty．They pump out perfumes designed to attract different insects who are natural enemies to the attackers．Once they arrive，the tables are turned．The attacker who was lunching now becomes lunch．
In study after study，it appears that these chemical conversations help the neighbors．The damage is usually more serious on the first plant，but the neighbors，relatively speaking，stay safer because they heard the alarm and knew what to do．
Does this mean that plants talk to each other？Scientists don't know．Maybe the first plant just made a cry of pain or was sending a message to its own branches，and so，in effect，was talking to itself．Perhaps the neighbors just happened to"overhear"the cry．So information was exchanged，but it wasn't a true，intentional back and forth．
Charles Darwin，over 150 years ago，imagined a world far busier，noisier and more intimate（亲密的） than the world we can see and hear．Our senses are weak．There's a whole lot going on．
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| A．It makes noises． | B．It gets help from other plants． |
| C．It stands quietly． | D．It sends out certain chemicals． |
A．The attackers get attacked．
B．The insects gather under the table．
C．The plants get ready to fight back．
D．The perfumes attract natural enemies．
34．Scientists find from their studies that plants canB．
A．predict natural disasters
B．protect themselves against insects
C．talk to one another intentionally
D．help their neighbors when necessary
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A．The world is changing faster than ever．
B．People have stronger senses than before．
C．The world is more complex than it seems．
D．People in Darwin's time were more imaginative．
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