问pp 一道题~~~马上要考了

zscsl

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

到底后面的are 什么时候可以省略什么时候不能够省略   答案选D

amy0208

是不是选C啊。个人认为  NOT.......BUT......句型。前面的NOT后面没有are，那but后面也就没有

zscsl

是不是选C啊。个人认为  NOT.......BUT......句型。前面的NOT后面没有are，那but后面也就没有

-- by 会员 amy0208 (2009/12/24 12:08:46)

选D~~~~

zscsl

An international team of astronomers working at telescopes in the Canary Islands and Spain has detected at least 18 huge gas spheres estimated to have 5 to 15 times the mass of Jupiter, the solar system's largest planet.

(A) astronomers working at telescopes in the Canary Islands and Spain has detected at least 18 huge gas spheres estimated to have 5 to 15 times the mass of Jupiter
(B) astronomers working at telescopes in the Canary Islands and Spain has detected at least 18 huge gas spheres estimated to be 5 to 15 times Jupiter's mass
(C) astronomers is working at telescopes in the Canary Islands and Spain, having detected at least 18 huge gas spheres that are estimated at 5 to 15 times the mass of Jupiter
(D) astronomers, working at telescopes in the Canary Islands and Spain, and has detected at least 18 huge gas spheres estimated at 5 to 15 times the mass of Jupiter
(E) astronomers, working at telescopes in the Canary Islands and Spain, has detected at least 18 huge gas spheres they have estimated to be 5 to 15 times Jupiter's mass

zscsl

大牛快现身。。。讲讲这东西！！！！

zetasol

D?

zscsl

D?

-- by 会员 zetasol (2009/12/24 12:36:19)

恩

taner

弱问~~~A？

zscsl

弱问~~~A？

-- by 会员 taner (2009/12/24 12:46:04)

上面的选D。。下面的选A

当当的驿站

我觉得第二题可以这么做 用排除的 B的最后是Jupiter's mass，修饰对象错误  C和D是最好排除的  C整个句子就不通，时态还很奇怪，D的has detected前面多了一个and，句子缺乏谓语，而E选项中那个they 根据我的拙见，GMAC是很不喜欢they it等的指代的，指代对象不怎么清楚，句子不严谨