Nothing is difficult when it is divided!
前文：Gregory Cochran 特立独行，敢说敢言
【1】5 he, however, might tremble
[A] Only adv. 只，仅仅，表示强调
[B] So adv.表因果
[C] Even adv.甚至，连，强调出乎意料
[D] Hence adv.表因果
at the 6 of what he is about to do（即将做的事）
[A] at the thought of 一想到（即将发生的事）
[B] at the sight of 一看到（正在发生的事）
[C] at the cost of 以……为代价
[D] at the risk of 冒着……的风险
【2】Together with another two scientists, he is publishing a paper which not only7 that one groupof humanity is more intelligent than the others, butexplainsthe process that has brought this about.
[A] advises v. 建议
[B] suggests v. 建议；提出（观点），表明（观点）
[C] protests v. 反对，对……提出异议
[D] objects v. 反对，对……提出异议
【3】The groupin 8 are a particular people originated from central Europe.
[A] (in) progress 在进行中
[B] (in) fact 事实上
[C] (in) need 在危难（急）中
[D] (in) question 正被讨论的，谈论中的
【4】The process is natural selection.
 Even he, however, might tremble at the thought of  what he is about to do.
- Even he（主）,
- might tremble at（谓）
- the thought of …（宾）
- is about to do（谓）。
 Together with another two scientists, he is publishing a paper  which not only suggests  that one group of humanity is more intelligent than the others, but explains the process  that has brought this about.
- [Together with another two scientists]（状）,
- is publishing（谓）
- a paper（宾）
- not only suggests（谓1）…
- but explains（谓2）
- the process（宾2） 这个分句中蕴含并列谓语not only suggests …but explains …；
- one group of humanity（主）
- more intelligent（表）
- [than the others]（状）；
- has brought this（宾）
- about（谓）； 其中谓语动词bring …about意思是“导致，引发……”
- The group in question（主）
- a particular people originated from central Europe（表）
The process（主）is（系）natural selection（表）。
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.
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