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  3. Few scientific fields are as full of risk as that of research into human intelligence. The two questions that【1】over and over a

Few scientific fields are as full of risk as that of research into human intelligence. The two questions that【1】over and over a

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问题     Few scientific fields are as full of risk as that of research into human intelligence.  The two questions that【1】over and over again are "is it a result of nature or nurture?" and "does race make a difference?"
    Making【2】comments about the second question can be a【3】move, as James Watson, a co-discoverer of DNA structure, recently found. He suggested that he was "【4】about the prospect of Africa"【5】"all our social policies are based on the fact that their intelligence is the same as ours (white people) 【6】all the testing says not really". Such【7】are not merely【8】, they are scientifically weird. If the term race has any useful scientific meaning, then Africa, the continent where modern【9】began, is most racially diverse. The resulting【10】forced Dr Watson to leave his laboratory.
    【11】, the study of【12】between intelligence and genetics has some wiser practitioners. One of them, Terrie Moffitt, of King’s College, has just【13】a project【14】the relative importance of nature and nurture. Dr Moffitt’s team【15】the effect on intelligence of breastfeeding, but in a genetic context. Previous studies have shown that breastfed children are more intelligent,【16】about six IQ points, than those given baby formulas.
    The team, however,【17】the involvement of a gene called FADS2, which comes in two varieties, known as C and G. The researchers【18】if these two varieties【19】differently with breast milk.【20】on data two groups of people, they found that the intelligence increase associated with breastfeeding only happened to people having inherited at least one copy of the C variety. The effect did not depend on the social classes or IQs of the parents.
选项 A、suspected
B、doubted
C、disapproved
D、challenged
答案A
解析 解答本题的要点是依据本段的大意推断出研究团队对名为FADS2的基因在母乳喂养中是否起作用的态度，既然是在本段首次提到了FADS2的基因，空格后的句子也在围绕FADS2的基因进行说明，由此可推出研究团队不是持反对的态度，比较四个选项，只有A选项是肯定的表达，因此A选项为正确答案。本句的意思是：然而研究团队怀疑这其中有名为FADS2的基因的作用，这种基因有两种类型，分别是C和G。
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