每日一题

Critical Reading>Sentence Completions

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

Since the explanations offered are ------- to the exposition, it would be unfair to treat them as ------- parts of the studies under consideration.

(A) tangential . . subsidiary
(B) irrelevant . . superfluous
(C) referable . . correspondent
(D) incidental . . essential
(E) crucial . . immutable

答案和解析

答案：D

解析：

The words filling the blanks are opposites, since if the "explanations"are one thing, it is "unfair to treat them"as the opposite. They are "incidental"and cannot be treated as the opposite of incidental, namely, "essential."