题目内容
【题目】______ environmental damage is done,it takes many years for the ecosystem to recover.
A. Even if B. If only
C. As if D. Once
【答案】D
【解析】一旦环境破坏被造成,它将会法非好多年让生态系统恢复。根据句意选D 一旦而 A即使 B只要 C好像,均不符合题意。
【题目】Just be patient.You _____ expect the world to change so soon.
A.can’t B.may not
C.needn’t D.didn’t