马上考了，紧急求教两道GWD语法

巴拉拉

Q33P-28
The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force a rethinking of the role of comets in the delivery of organic compounds to the evolving Earth.

A.    The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force
B.    The spectacular disintegration of a comet last year in full view of ground- as well as space-based telescopes, provided new insights into how comets form and thus possibly forcing
C.    When a comet's spectacular disintegration occurred in full view of ground- and space-based telescopes last year, it provided new insights into how comets form and thus may possibly force
D.    Last year, in full view of ground- and space-based telescopes, a comet's spectacular disintegration provided new insights into how comets form and thus possibly forcing
E.    Last year, in full view of ground- as well as space-based telescopes, the spectacular disintegration of a comet has provided new insights into how comets form and may thus force
我选的E，答案是A，我没看懂这道题是什么意思，求翻译，求指点
Q34: PP-SC45
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 tastes 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
我选的A，答案是E。我觉得E中的指代不是很清楚啊，others不能代表其它的物种的意思吧，另外A怎么错了呢
谢谢NN了

coocooper

第二题， A， this不可以单独指代，this+n. 指代。

eshopaholic

第一句的主要结构：

The disintegration provided ..... and may thus force ......

林中雪

谢谢LS两位的回答，我还想问下第一题E怎么错了呢

eshopaholic

E 的句意错了。 原意是：两种望远镜观察的结果不相匹配（disintegration)

而非，ground-telescope观察出一个disintegration, space-telescope也观察出一个disintegration

词不达意，见笑了

林中雪

谢谢LS的解答，理解了

flora_yj

第一题E:last year改变位置错，原句作定语修饰comet,E中作状语修饰谓语动词；as well as改变句意，原句中使用and与as well as含义不同；现在完成时态错。

第二题A：this 不能单独指代；that of没有指代对象。