往复式压缩机的运动部件主要包括()、()、()。
参考答案:曲轴、连杆、十字头
— What _____ your teacher _____?
— She is friendly. [ ]
A. does, like
B. is, like
C. are, like
D. do, like
---Susan, go and join your sister cleaning the yard.
--- Why ___? John is sitting there doing nothing.
A.him
B.he
C.I
D.me