素描的工具有笔、纸、橡皮、画板和（）。
A、美工刀
B、夹子
C、胶带纸
D、素描工具
参考答案：D
用千分表法调整康明斯KTA-19G2柴油机喷油器柱塞行程时，若5号缸可以调气门间隙，则（）可以调喷油器柱塞行程。
A.3缸
B.6缸
C.4缸
D.1缸
We all agree with you, so we hope you _____ change your idea. [ ]
A. had better not to
B. would better not
C. would better not to
D. had better not
