A.处于悬浮状态的物体
B.匀速下沉的物体
C.匀速上浮的物体
D.物体沉在容器底,且对容器底部有压力的物体
答案:D
小题1:He taught in this school last year.(把last year改为 since last year)
He _________ _________ in this school _________ last year.
小题2:They didn’t clean the classroom yesterday.(改为被动语态)
The classroom _________ _________ yesterday.
小题3:We have already returned the books.(改为否定句)
We _________ __________ the books ___________.
小题4:Rice is grown in China.(划线部分提问)
_________ is rice ___________?
列举影响旅游外汇损益的因素。