The immigrants in America are playing an important role in the national science development. Mr. Obama says that part of the sol

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问题     The immigrants in America are playing an important role in the national science development. Mr. Obama says that part of the solution【C1】______America’s economic problems should come from its universities and research laboratories. Yet these【C2】______in America are now manned disproportionately(不均衡地)by immigrants, who made【C3】______47% of scientists and engineers in America with PhDs. William Kerr, an economist at Harvard Business School, used name-matching software to【C4】______the ethnicity(种族)of each of the 8 million scientists who h ad【C5】______an American patent since 1975. He found that the share of patents【C6】______to scientists born in America【C7】______between 1975 and 2004. The share of all patents given to scientists of Chinese and Indian【C8】______living n America more than tripled,【C9】______4.1% in the second half of the 1970s to 13. 9% in the【C10】______between 2000 and 2004. Some of these patents may have been given to American-born children of earlier【C11】______, but Mr. Kerr reckons that most changes over time【C12】______from fresh immigration.
    But does all this emigration from the developing world【C13】______the originating countries’ capacity【C14】______innovation? A new【C15】______uses data on the patents cited by scientists working in India in their【C16】______to America’s patent office. It finds that proximity .(邻近) 【C17】______matter. Indian patent applicants【C18】______to research by people in India much more often than they cite work by those【C19】______In that sense, having many scientists【C20】______India does weaken innovation there.
【C5】

选项 A、rewarded
B、reached
C、accumulated
D、acquired

答案D

解析 空格后面有patent,所以此处想表达的是“获得专利”的意思,“获得”用acquired来表示,一般指要通过努力得到。动词reward常用于reward sb.with/for sth,意为“奖励某人某物/为了某事而奖励某人”。句子中who引导的定语从句修饰scientists,因此如果用reward,应该用被动结构be rewarded with来表达。reached意为“到达”,用在此处不符合句意。accumulated意为“(逐渐地)积累“,后面常接knowledge,wealth,experience等名司。
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