下列词语中书写有误的一项是[ ]
A.清澈 倔强 玷污 堕落
B.点缀 雏形 畅谈 观测
C.慷慨 闲适 禀告 风韵
D.报酬 奥恼 蹂躏 分辩
答案:D
I prefer ______ her some presents ______ her some money. [ ]
A.to buying, to giving
B.to buy, to give
C.buy, give
D.buying, to giving
若输水管内存有空气就可能产生()。