产钳的作用有哪些()。
A.牵引作用
B.旋转作用
C.压迫作用
D.杠杆作用
E.保护作用
参考答案:A, B, C, D, E
国共两党联合起来,以“打倒列强、除军阀”为目标开展了[ ]
A.新文化运动
B.北伐战争
C.抗日战争
D.重庆谈判
The survey __________ our school last month shows that about 2 percent of the students are addicted to Internet games.
A.conducted
B.having been conducted
C.conducting
D.to be conducted