OG13 According to scientists who monitored its path

beyondgmatqin

According to scientists who monitored its path, an expanding cloud of energized particlesejected from the Sun recently triggered a large storm in the magnetic fieldthat surrounds Earth, which brightened the Northern Lights and also possiblyknocking out a communicationssatellite.

(A) an expanding cloud of energized particles ejectedfrom the Sun recently triggered a large storm in the magnetic field thatsurrounds Earth, which brightened the Northern Lights and also possiblyknocking

(B) an expanding cloud of energized particles ejectedfrom the Sun was what recently triggered a large storm in the magnetic fieldthat surrounds Earth, and it brightened the Northern Lights and also possiblyknocked

(C) an expanding cloud of energized particles ejectedfrom the Sun recently triggered a large storm in the magnetic field thatsurrounds Earth, brightening the Northern Lights and possibly knocking

(D) a large storm in the magnetic field that surroundsEarth, recently triggered by an expanding cloud of energized particles,brightened the Northern Lights and it possibly knocked

(E) a large storm in the magnetic field surrounding Earthwas recently triggered by an expanding cloud of energized particles,brightening the Northern Lights and it possibly knocked

beyondgmatqin

标准答案解释：Logical predication; Rhetorical construction; Verb form
The timing and logical relationships among the events described in this sentence are of utmost importance. The scientists monitored a cloud ejected from the Sun. The cloud triggered a large storm, whose consequences were the brightening of the Northern Lights and the possible knocking out of a satellite. The latter two events are in a conjunction, so they should be represented by similar verb forms.
A，不平行
B.X was what triggered Y is wordy and awkward, and its meaning is unclear in this context. Given the most plausible intended meaning of the sentence, the two conjunctions and...and... in the last clause are redundant. The comma after Earth turns the final part of the sentence into an independent clause, and it is unclear whether this is part of what the scientists claimed or a separate
C.正确
D.The wording in this answer choice makes the intended meaning unclear. The information that the cloud articles were ejected from the Sun is lost. The sentence is ungrammatical; the second conjoined main verb, knocked, needs no pronoun subject it because its subject
E.The wording in this answer choice makes the intended meaning unclear. The information that the cloud articles were ejected from the Sun is lost. The two conjoined verbs are of different form; the second conjoined verb includes an unnecessary pronoun subject.

shelly1214

蓝莓米苏

很详细，谢谢！！

Bestwish

beyondgmatqin

回复 4# 蓝莓米苏

serein

感谢老师的分享

gouchenxi

楼主太牛了