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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
admin
2022-12-26
28
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.
【C4】
选项
A、dangerous
B、risky
C、extinct
D、insecure
答案
A
解析
本填空考查形容词,且形容词处于表语的位置,即对主语进行定性,原文的主语为Plant and animal species(植物和动物物种)。分析本段落的结构发现本填空所在句子实际上是处在一个排比性的结构中,而这些排比句都是在讲述环境的危机,如下:根据上述排比性的结构,可以看出本填空所要表达的意思其实是雷同于degraded or disappearing和over exploited的。在四个选项中C项extinct表示“灭绝的”并不合适,因为两个对照线索讲述的是“问题很危险和严峻”,但还没有到“灭绝”的程度。D项insecure表示“不安全的”。B项risky表示“有风险的”,修饰这个主语并不恰当,并且所表示的程度不合适,只有选项A项dangerous所表示的“危险的”修饰主语最合适,所表达的程度也合适,所以为最佳答案。
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0
考研英语二
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