水力清通法时堵住上游检查井的出口，使井内水位上升至（）m左右时，突然放去气球内的空气，气球缩水，浮于水面。
A、2
B、5
C、5
D、1
参考答案：D
小题1:Nicolas likes music because it is relaxing . (画线部分提问)
__________ does Nicolas like music ?
小题2:Jim can play chess very well . （改为否定句）
Jim __________ play chess very well .
小题3:Bob can speak French . He can’t speak it very well . （合成一句话）
Bob can speak French __________ he can’t speak it very well .
小题4:Sally likes action movies . (画线部分提问)
__________ __________ __________ movies does Sally like ?
小题5:I brush my teeth after breakfast every morning . （用Sue 改写句子）
Sue __________ her teeth after breakfast every morning .
小题6: He usually plays football on Friday afternoon. (画线部分提问)
__________ _________ he usually __________ on Friday afternoon ?
工艺联锁由于因故无法投用，应办理（）手续。
A、停用
B、临停
C、注销
D、不需办理
