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【A1】______ to say it anyway. He is that【A2】______ bird, a scientist who works independently 【A3】______ any institution. He helped popularize the idea that some diseases not 【A4】______ thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested.
【A5】______ he, however, might tremble at the【A6】______ of what he is about to do. Together with another two scientists, he is publishing a paper which not only 【A7】______ that one group of humanity is more intelligent than the others, but explains the process that has brought this about. The group in 【A8】______ are a particular people originated from central Europe. The process is natural selection.
This group generally do well in IQ test, 【A9】______ 12-15 points above the 【A10】______ value of 100, and have contributed【A11】______ to the intellectual and cultural life of the West, as the【A12】______ of their elites, including several world-renowned scientists, 【A13】______. They also suffer more often than most people from a number of nasty genetic diseases, such as breast cancer. These facts,【A14】______, have previously been thought unrelated. The former has been 【A15】______ to social effects, such as a strong tradition of【A16】______ education. The latter was seen as a (an) 【A17】______ of genetic isolation. Dr. Cochran suggests that the intelligence and diseases are intimately 【A18】______. His argument is that the unusual history of these people has【A19】______ them to unique evolutionary pressures that have resulted in this 【A20】_____ state of affairs.
单选题
【A1】______
【正确答案】
B
【答案解析】本句以连接词but 为始, 与第一句话之间存在着明显的转折逻辑关系。 将两句的成分进行对比, 前一句是dare not speak, 表示“不敢说”, 根据转折关系, 可推测知第二句要表达的是“敢于说”。 prepare意为“准备”, be prepared to do表示“准备好做……”, 代入句中可表示“准备好说出”, 与前面的dare not形成对比, 因此, 正确答案为B选项。 select表示“挑选; 选拔”, oblige意为“强迫; 迫使”, pleased表示“乐于; 喜欢”, 均不符合题意。
【答案解析】将选项代入原文, 构成: at the thought of(一想到) , at the sight of(一看见) , at the cost of(以……为代价) , at the risk of(冒着……的风险) 。 根据语境, A选项为最佳答案, 表示“他一想到将要做的事就发抖”。
【答案解析】give up to表示“让给”, get sth. over to表示“讲清某事, 让某人明白”, carry on表示“继续开展; 坚持”,put down to表示“归因于”。 本句主语The former指代的是前文中阐述的“智商高的这群人对西方知识和文化贡献大”这一事实, 宾语为social effects(社会影响) , 可以推出主语与宾语是因果关系。 另外, 本句与下一句是平行关系, 对这两个句子进行对应分析, 空格部分与seen as对应, 表达“被看作; 归因于”的意思。 be put down to作为常用搭配, 可表示“归因于”, 因此, D选项符合题意。