单选题
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 (1) to say it anyway. He is that (2) bird, a scientist who works independently (3) any institution. He helped popularize the idea that some diseases not (4) thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested. (5) he, however, might tremble at the (6) of what he is about to do. Together with another two scientists, he is publishing a paper which not only (7) that one group of humanity is more intelligent than the others, but explains the process that has brought this about. The group in (8) are a particular people originated from central Europe. The process is natural selection. This group generally do well in IQ test, (9) 12-15 points above the (10) value of 100, and have contributed (11) to the intellectual and cultural life of the West, as the (12) of their elites, including several world-renowned scientists, (13) . They also suffer more often than most people from a number of nasty genetic diseases, such as breast cancer. These facts, (14) , have previously been thought unrelated. The former has been (15) to social effects, such as a strong tradition of (16) education. The latter was seen as a (an) (17) of genetic isolation. Dr. Cochran suggests that the intelligence and diseases are intimately (18) . His argument is that the unusual history of these people has (19) them to unique evolutionary pressures that have resulted in this (20) state of affairs.
【答案解析】[解题思路] 考查动词搭配和语义。几个动词的被动语态都可以放在be + Ved + to do结构中,但是语义不同。[A]表示“被挑选出来去……”;[B]表示“做好去……的准备”;[C]表示“被迫使去……”;[D]表示“非常荣幸去……”。语义参照点在文章第一句:很多理论不敢言明……。第二句开头的but提示本句与前面“不敢”的情况相反,只有[B1语义最为接近。
单选题
[A] unique [B] particular [C] special [D] rare
【答案解析】[解题思路] 考查名词。属于固定搭配:at the thought of表示“一想到……就”。其他几个选项也可以放在这个结构中,但是语义不同:[B]选项:at the sight of表示“一看到……就”,但是后面的宾语是将来的事情,无法看到,因此排除;[C]选项:at the cost of表示“以……为代价”,涉及成本问题,本文没有提到,排除;[D]选项:at the risk of表示“冒着……的风险”,而“what he is about to do”并不是什么风险,也可以很快排除。
【答案解析】[解题思路] 考查动词。本题较难。难点在于把一个句子的主语和谓语都划了横线让考生自己填,就必须先选对一个,才能选对另外一个。本空套在as引导的一个定语从句中“as the careers of their elites______”,即“正如他们中的那些精英成就的事业所______的一样”,前文说“他们的智商高于平均水平,同时做出了巨大贡献”,而该定语从句中的“精英的事业”无疑就成为前面观点的具体证据,那么其功能自然就是“证明观点”,因此,只能选出表示“证明”的[A]选项。