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  3. The idea that some groups of people may be more intelligent than others is one of those hypotheses that dare not speak its name.

The idea that some groups of people may be more intelligent than others is one of those hypotheses that dare not speak its name.

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问题     The idea that some groups of people may be more intelligent than others is one of those hypotheses that dare not speak its name. But Gregory Cochran is【C1】______to say it anyway. He is that【C2】______bird, a scientist who works independently【C3】______any institution. He helped popularize the idea that some diseases not【C4】______thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested.
    【C5】______he, however, might tremble at the【C6】______of what he is about to do. Together with another two scientists, he is publishing a paper which not only【C7】______that one group of humanity is more intelligent than the others, but explains the process that has brought this about. The group in【C8】______is a particular people originated from central Europe. The process is natural selection.
    This group generally does well in IQ test, 【C9】______12-15 points above the【C10】______value of 100, and have contributed【C11】______to the intellectual and cultural life of the West, as the【C12】______of their elites, including several world-renowned scientists, 【C13】______They also suffer more often than most people from a number of nasty genetic diseases, such as breast cancer. These facts, 【C14】______, have previously been thought unrelated. The former has been【C15】______to social effects, such as a strong tradition of【C16】______education. The latter was seen as a(an) 【C17】______of genetic isolation. Dr. Cochran suggests that the intelligence and diseases are intimately【C18】______. His argument is that the unusual history of these people has【C19】______them to unique evolutionary pressures that have resulted in this【C20】______state of affairs.
【C4】
选项 A、subsequently
B、presently
C、previously
D、lately
答案C
解析 本题考查语义衔接。本题目选择副词，在句子中充当状语。句子叙述到Hehelped popularize the idea that some diseases not thought to have a bacterial cause were actuallyinfections，which ruffled many scientific feathers when it was first suggested．分析本句结构可以看出：that引导的是同位语从句．说明idea的内容，从句中some diseases not…thought tohave a bacterial cause是主语部分，谓语是were actually infections…，而后面which引导的非限制定语从句是修饰the idea这个名词的。解本题的关键词是actually“实际上”，隐含转折之意，即过去的看法和实际情况不同。选项A．subsequently随后；B．presently当前；C．previously先前；D．lately近来，最近。为了与本句子中的“actually，实际上”相互呼应，要体现时间上的先后交替关系。故选C。
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