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标题: prep2-34,2-150 [打印本页]

作者: 愁予 时间: 2008-6-17 15:20
标题: prep2-34,2-150

34. (26262-!-item-!-188;#058&003094)

Besides adding complementary flavors to many foods, hot sauces stimulate the release of endorphins in the brain, just as exercise does, and these have a pain-relieving effect like morphine's.

(A) hot sauces stimulate the release of endorphins in the brain, just as exercise does, and these have a pain-relieving effect like morphine's

(B) hot sauces stimulate the release of endorphins in the brain, like exercise, and they have a pain-relieving effect that is like morphine

(C) hot sauces and exercise both stimulate the release of endorphins in the brain, and they have a pain-relieving effect like morphine

(D) the release of endorphins in the brain is stimulated both by hot sauces and exercise, and they have a pain-relieving effect like morphine's

(E) the release of endorphins in the brain is stimulated by hot sauces, just as with exercise, and these have a pain-relieving effect like that of morphine

150.
(32705-!-item-!-188;#058&007266)

Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of others.

(A) and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of

(B) and apparently this assists flies when they taste the hydrocarbons on prospective mates in distinguishing their own species from those of

(C) which apparently assists flies that taste the hydrocarbons on prospective mates in being able to distinguish their own species from

(D) apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish their own species from those of

(E) apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishing their own species from

我想问的是,为什么第34题的these可以当主语呢,那150题中的this是不是也可以当主语?

作者: xingxing23 时间: 2008-6-17 15:28
150里的应该用these吧

作者: yulestoic 时间: 2008-6-17 16:44

我觉得34题里的these指的是endorphins，因为endorphins在前一句里不是主语，所以后面想说它和吗啡具有同样功效的时候必须另起一句说。而150题里主语都是Hydrocarbons，就没必要另起一句了。况且Hydrocarbons是复数，this assists就不对了。

拙见，望指正！

作者: liming21 时间: 2008-6-25 23:00
不是说了代词在独立的句子中，不能单独使用吗？怎么用those呢

诶,这个问题真是无人可解拉!!!

作者: z89113570 时间: 2009-9-4 13:33
up

作者: 妖怪毛毛 时间: 2009-10-24 09:49

作者: dengyichao 时间: 2009-10-24 22:24

these指代的是endorphins

不能用this的原因是this不能指代完整的前句

作者: ruin_bow 时间: 2009-10-24 23:18
我觉得，150题不用纠结于this 能否指代的问题，一个and就注定后面怎么折腾也没法和前面平行了。。。

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