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Seismologists studying the earthquake that struck northern California in October

游客2025-02-25  29
问题 Seismologists studying the earthquake that struck northern California in October 1989 are still investigating some of its mysteries: the unexpected power of the seismic waves, the upward thrust that threw one man straight into the air, and the strange electromagnetic signals detected hours before the temblor.
选项 A、the upward thrust that threw one man straight into the air, and the strange electromagnetic signals detected hours before the temblor
B、the upward thrust that threw one man straight into the air, and strange electromagnetic signals were detected hours before the temblor
C、the upward thrust threw one man straight into the air, and hours before the temblor strange electromagnetic signals were detected
D、one man was thrown straight into the air by the upward thrust, and hours before the temblor strange electromagnetic signals were detected
E、one man who was thrown straight into the air by the upward thrust, and strange electromagnetic signals that were detected hours before the temblor
答案 A
解析 Parallelism; Grammatical construction
Some of the earthquake’s mysteries are described in a series of three correctly parallel elements: (1) the unexpected power ..., (2) the upward thrust..., and (3) the strange electromagnetic signals.... Each of the three elements begins with an article (the), a modifier, and a noun. This parallelism is crucial, but each mystery is allowed the further modification most appropriate to it, whether a prepositional phrase (1), a clause (2), or a participial phrase (3).
A Correct. This sentence correctly provides a parallel series of three mysteries.
B The is omitted before strange. The verb were detected makes the last element not parallel to the previous two.
C Because they use complete independent clauses, the last two elements are not parallel to the first, and the sentence is ungrammatical.
D The constructions beginning one man and hours before are not parallel to the construction beginning the unexpected power.
E The grammatical constructions describing the mysteries are not parallel.
The correct answer is A.
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