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.

Bromelain, an enzyme found in pineapples, is not ------- in preventing bone and joint diseases, which can make bones susceptible to injury, but it can help injured bones -------.

(A) corrective . . heal
(B) effective . . recover
(C) detrimental . . multiply
(D) supportive . . degenerate
(E) vital . . persist

答案和解析

答案：B

解析：

It makes sense to say that although bromelain is not "effective" against, or cannot prevent, bone injury, it is effective in helping injured bones "recover."