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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
26
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.
【C7】
选项
A、are
B、is
C、was
D、were
答案
A
解析
本填空选择一个系动词且处于一个定语从句之中,关键线索就是定位这个定语从句的先行名词,或者这个待选系动词的主语。我们分析一下这个句子的基本结构,如下:上述分析可以确定这个定语从句用来修饰the tremendous increases in scientific capability,再进一步分析这个结构,看看谁是真正的主要名词,即后面定语从句的先行词(主语),显然是the tremendous increases,因为之后的in scientific capability只是一个介词结构,其作用是补充说明the tremendous increases的。那么the tremendous increases就是后面定语从句先行名词,或者本填空的主语。四个选项中就排除了B项is和C项was。再从时态来判定,这个the tremendous increases就是当今世界正在发生的事情,应该是现在时,所以答案为A项are。
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0
考研英语二
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