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.
【C10】

选项 A、help
B、consolidate
C、hinder
D、improve

答案D

解析 本填空考查动词,而且我们注意到其宾语为our understanding。前文刚刚出现过这个宾语,即复现结构,可以看出,实际上gain a better understanding这个线索与本填空的动宾搭配构成了复现平行对应结构,即本动宾搭配的意思与该对应线索是类似的意思,这样在四个选项中最合适的答案为D项improve,因为improve our understanding实际上就是gain a better understanding的意思,或者从better也可以定位本填空的动词选项应该是D项 improve。
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