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这是我从论坛整理的答案，过了这么久不知道能不能帮到你了。。
In answer choice A, "increased by more than twice" is unidiomatic; when numbers increase, they "increase by more than a factor of two." Also, "twice" is an adverb; only nouns can follow the preposition "by."
Answer choice B introduces an issue in meaning. When the number of degrees "increased more than two times," that means over the period of 1978 to 1985, it has gone up at least twice: maybe in 1980 and then in 1981. The other times, it has stayed steady or gone down.
Answer choice D uses the passive voice and suggests some unnamed agent (who did the doubling.)
"was more than" demonstrates a comparison: "The number of pennies was more than the number of nickels." It doesn't make sense for us to say "the number ... was more than doubled": we cannot compare "number" with "doubled" since doubled is not a noun.
Answer choice E incorrectly uses the past perfect tense (had). "Had" is only used when verbs within the same sentence refer to different time periods. Because there is only one verb in this sentence, there is no use for the verb "had."
The correct answer choice is C, which succinctly expresses the growth. |
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发表于 2019-8-27 12:12:09
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