鼻出血最常发生于()。
A.上鼻道
B.中鼻道
C.鼻中隔前下区
D.鼻中隔前上方
E.下鼻道
参考答案:C
已经成功举办了第几届奥运会?()
A、28
B、29
C、30
It's snowing now. You'd better ____ your car slowly on a snowy day. [ ]
A. drive
B. drove
C. driving
D. to drive