Question

【题目】Magic shows are entertaining ______ the audience does not discover how the tricks are done.

A. so that B. as long as

C. as if D. ever since

Answer 1

【答案】B

【解析】考查固定短语。A. so that以便；B. as long as只要；C. as if似乎；D. ever since从那时起。句意：只要观众没有发现魔术表演是怎么做的，魔术表演就很有娱乐性。此处表示条件，故选B.