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 hey also suffer more often than most people from a number of nasty genetic diseases, such as breast cancer. These facts, 14 ave previously been thought unrelated. The former has been 15 social effects, such as a strong tradition of valuing ucation. The latter was seen as a (an) consequence genetic isolation. Dr. Cochran suggests that the intelligence and diseases are intimately linked is argument is that the unusual history of these people has subjected em to unique evolutionary pressures that have resulted in this paradoxical ate of affairs.
1. [A] selected [B] prepared [C] obliged [D] pleased
2. [A] unique [B] particular [C] special [D] rare
3. [A] of [B] with [C] in [D] against
4. [A] subsequently [B] presently [C] previously [D] lately
5. [A] Only [B] So [C] Even [D] Hence
6. [A] thought [B] sight [C] cost [D] risk
7. [A] advises [B] suggests [C] protests [D] objects
8. [A] progress [B] fact [C] need [D] question
9. [A] attaining [B] scoring [C] reaching [D] calculating
10. [A] normal [B] common [C] mean [D] total
11. [A] unconsciously [B] disproportionately
[C] indefinitely [D] unaccountably
12. [A] missions [B] fortunes [C] interests [D] careers
13. [A] affirm [B] witness [C] observe [D] approve
14. [A] moreover [B] therefore [C] however [D] meanwhile
15. [A] given up [B] got over [C] carried on [D] put down
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