39: GWD-29-Q26In hisexperiments with gravity, Isaac Newton showed how the motion of each planet inthe solar system results from the combined gravitational pull of the Sun and ofall the other planets, each contributing according to their mass anddistance from the others.
A. ofall the other planets, each contributing according to it
B. ofall the other planets, with each of them contributing according to their
C. allthe other planets, each of which contributing according to its
D. all the other planets, each contributing according to its
E. allthe other planets, each of which contribute according to their
本题选D，排除法可以做出来。想请教D项加of对么。。。另外and后面的all the other planet到底是和前面的哪个成分并列呢？the sun?each planet?句子结构没看懂，大家帮忙解释下好吗~~谢谢啦 作者: dontwannalos 时间: 2010-9-4 20:05
不要加of, sun 和 other planets并列作者: evenlasting 时间: 2010-9-5 10:56
Of course,it is better to add an "of" at the begining of the choice(D).
It is the combined gravitational pull of and (the combined gravitational pull of) the others that results in the motion of each plannet,keeping them moving in balance.Adding an "of" can clear the ambiguity while omiting does not make a gramar mistake.It a trap here since A sounds better if "their" changes to "its",which reffers to a single "each".
BTW,It is a use of idiom here:each contributing ....
Remember the grossay of such use:
1.n + a. :I am jtrchina,a CDer famous for his kindness.
2.n + preposition :I am jtrchina,a member of CD.
3.n + doing :I am jtrchina,a member writing posts.
4.n + ~ed: I am jtrchina,a member thought as friendly.
5.n + to do:I am jtrchina,a friend to help you overcome the gmat.
Hope it helps!作者: bettyofariN 时间: 2010-9-6 06:44
严重thanks~
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