在炎热和有风的天气中，应在混凝土灌注后（）h内，即行遮盖并浇水。
A.2～3
B.4～5
C.6～7
D.7～8
参考答案：A
国标商品煤样采取方法适用于哪几种煤？
– Which movies do you prefer, comedies or action movies?
– I watch action movies see comedies.
A. would rather; than
B. like; better
C. prefer; to
