连杆轴承合金层烧熔在发动机任何温度下，都有很强的（）声响，断火试验仍一样。
A.当当
B.哗啦
C.嗒嗒
参考答案：A
—Why does he like science?
—_____ it's interesting. [ ]
A. Because
B. And
C. But
D . Then
I really don't know how to _____ the naughty boy. [ ]
A. do with
B. deal with
C. treat with
D. play
