混凝土泵只能完成垂直输送并浇灌混凝土。
参考答案:错
— Are there ___________ eggs on the table?
— No, there are ___________ pears on it.[ ]
A. any, some
B. some, some
C. any, any
D. some, any
The old man has a son and two daughters, ______ treating him well, ______ makes him sad.
A.none of them; which
B.and none of whom; that
C.none of whom; which
D.and none of them; that