【单选题】_______ bottles of water do you want?
【单选题】当婴儿生理上还不具备学习坐的动作的可能性时,要他学坐是无效的,这是因为儿童动作的发展受到了 ( )。
【单选题】---________ do you water these flowers? --- Once a week.
【单选题】How do man-made water resources such as reservoirs and lakes affect the water cycle?
A.
They increase the danger of flooding in the areas surrounding them.
B.
They cause changes in the patterns of rainfall in the immediate area.
C.
They provide water sources for agricultural purposes in dry areas.
D.
They improve the natural flow of water into the oceans.
【单选题】— ______ do you water the flowers? — Twice a day. [ ]
【单选题】当婴儿生理上还不具备学习坐的动作的可能性时,要他学坐是无效的,这是因为儿童动作的发展受到了( )