1. Silver is the best conductor of electricity, copper ________ it closely.

　　A.followed B.following C.to follow D.being followed

　　2. Seldom ________ any mistakes during my past few years of working there.

　　A. would I make B. have I made C. I made D. shall I make

　　3. ________ the punishment was unjust. Helen accepted it without complaint.

　　A. However B. So long as C. Even though D. Since

　　4. Scientists still can’t predict the exact time _____ the earthquake will happen.

　　A. where B. when C. why D. how

　　5. Weather ______, the sports meeting will be held.

　　A. permits B. permitted C. permitting D. permits

　　參考答案：

　　1-5 B B C B C