“原产国(地区)”栏应填( )。
A.德国
B.英国
C.新加坡
D.伦敦
参考答案:C
If a person has not had enough sleep, his actions will give him ___ during the day. [ ]
A. away
B. up
C. in
D. back
病毒产生在前,反病毒手段滞后,这将是一个长期的过程。