为了进行滑油油样分析，应在发动机（）提取油样.
A.起动前
B.停车后尽快
C.起动后尽快
D.停车前
参考答案：B
—Could I go boating this weekend, Dad?
—Yes, you ________. But you have to come back before lunch. [ ]
A. can
B. must
C. need
D. should
与冒相表里的是（）。
A．心
B．肝
C．脾
D．肺
E．肾
