prep语法：每天必做，做了必错。求教2题~

猫猫鱼鱼 · 发表于 2011-9-7 17:17:33

V7
Q22. p1-sc66.(28087-!-item-!-188;#058&003498)

Africa's black rhino population in the mid-1970's numbered about 20,000, ten times the estimated population of 2,000 in 1997.

(A) the estimated population

(B) that of their estimated population

(C) more than the population's estimated amount

(D) more black rhinos than their population estimate

(E) more than that of their population's estimated amount

答案居然选A了。。A连个than都没有是个神马用法啊·

Q37. p1-sc74.(28503-!-item-!-188;#058&003635)

Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection, favored due to their enhancement of reproduction or survival, but that they are simply random by-products of other evolutionary developments.

(A) due to their enhancement of reproduction or survival, but that they are

(B) due to the reproduction or survival they enhance, but they are

(C) because they enhance reproduction or survival, but

(D) because they enhance reproduction or survival, but are

(E) because of enhancing reproduction or survival, but are

答案选了D啊。。为什么but后面可以省略主语。。。

另：在语法上花了不少时间了但是进步微乎其微，难过。不知道大家在语法上有什么经验，求指点。

fdrandom · 发表于 2011-9-7 17:35:09

前一题，ten times + 名词，一个20000，一个2000，正好十倍啊。其它几个选项that错了，没有指代，还有比较对象不对等的问题
后一题是not ... but ...的平行结构，主语要省的

prep语法：每天必做，做了必错。求教2题~

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