SAT官方每日一题:2015年11月13日(完成句子)

Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.

Their conversation was unsettling, for the gravity of their topic contrasted so oddly with the ------- of their tone.

(A) uniqueness

(B) rapidity

(C) lightness

(D) precision

(E) reverence

Explanation

Only lightness fits the logic of the sentence as being contrary to the gravity of the topic. Listening to others discuss a grave (or serious) topic in a light-hearted tone would be unsettling and confusing.

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