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  3. One of the most pressing challenges the world will face in the next few decades is how to alleviate the growing stress that huma

One of the most pressing challenges the world will face in the next few decades is how to alleviate the growing stress that huma

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问题     One of the most pressing challenges the world will face in the next few decades is how to alleviate the growing stress that human activities are placing【C1】________the environment. The consequences are just too great to【C2】________. Wildlife habitats are being degraded or disappearing altogether as new developments【C3】________more land. Plant and animal species are becoming【C4】________at a greater rate now than at any time in Earth’s history.【C5】________many as 30 percent of the world’s fish stocks are over-exploited. And the list goes on.
    【C6】________, there is reason to have hope for the future. Advances in computing power and molecular biology are among the tremendous increases in scientific capability that【C7】________helping resear-chers【C8】________a better understanding of these problems. Recent development in science and technology could provide the【C9】________for some major and timely actions that would【C10】________our understanding of how human activities affect the environment.
    One priority for research is improving hydrological forecasting. It has been【C11】________that the world’s water use would triple in the next two decades. Already, widespread water【C12】________have occurred in parts of China, India, and North Africa. The need for water also is taking its toll on fresh water ecosystems in the United States. Only 2 percent of the nations’ stream are considered in good【C13】________, and【C14】________to 40 percent of native fish species are rare to extinct.
    To prevent outbreaks of【C15】________diseases in plants, animals and human, more study is needed on how parasites and disease-carrying species—as【C16】________as humans and other species they【C17】________—are affected by changes in the environment. The overuse of antibiotics both in humans and in farm animals has【C18】________ to the growth of antibiotic-resistant micro organism. Researchers can take【C19】________of new technologies in genetics and computing to better monitor and【C20】________the effects that environment changes might have on diseases outbreaks.
【C3】
选项 A、take over
B、take off
C、take down
D、take on
答案A
解析 本题考查动词词组，等同于考动词。首先定位本填空的主语为new developments(新的发展)，宾语为more land(更多的土地)。根据这些线索应该不难定位出本填空动词所应表达的意思大概为“占据、侵占”。四个选项的具体意思为：A项take over(接管，接收)、B项take off[取走，拿走；(飞机)起飞]、C项take down(拿下；卸下；降下)、D项take on(承接，承担)。考虑到原文全句的信息为Wildlife habitats are being degraded or disappearing altogether as new developments________more land. 通过提示线索as揭示出前后句子实际为因果关系，即本填空后面句子为前面的原因，而前面讲述的为“野生动物在减少和消亡”，所以本填空的宾语land实际上是由Wildlife habitats占据的，人类的发展后来占据了这些land，这个过程就是由“接管、接收”而引申为“占据”，所以符合此意思的选项为A项take over(接管，接收)。
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