胆石利通片用量（）
A.一次三片
B.一次四片
C.一次五片
D.一次六片
参考答案：D
The computer system suddenly while he was searching for information on the Internet. [ ]
A. broke down
B. broke out
C. broke up
D. broke in
推动形成全面开放新格局，要以（）为重点，坚持引进来和走出去并重。
A.改革开放
B.一带一路
C.大国外交
