—Why? I don't think they are useful.
A:take off
B:throw away
C:put into
D:bring in
“赤地千里,饿殍载道”“……蔽日,声如雷,食尽稼,赤地如焚”的写照描述了哪种自然灾害( )
一定含有两种元素的物质是()
从银行取出工资,并购买所需的商品,这一过程体现的货币职能为( )
如图是花的结构示意图,请据图回答:
已知平面α∥平面β,点P∈平面α,平面α、β间的距离为8,则在β内到点P的距离为10的点的轨迹是( )