题目内容

I have _______ as a music teacher for three years.

A. worked
B. working
C. work
D. works

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You can go out _____ you promise to be back before 11 o’clock.

A. so that
B. as far as
C. so long as
D. in case

I’d like to have a try, ____ I may fail.

A. since
B. though
C. until
D. after

汽转动汽车方向盘时，汽车方向盘操纵杆（）变形。

A. 弯曲
B. 轴向拉伸
C. 扭转
D. 剪切

按右手螺旋法则，以拇指代表截面的外法线方向，则四指转向相同的扭矩为正。

A. 对
B. 错