粗加工时，加工余量和切削用量均较大，因此会使刀具磨损加快，所以应选用以润滑为主的切削液。（）
参考答案：错
More and more people have got to know the importance of the English study. ______, about six people in ten in this city are able to speak a little English.
A．Believe it or not
B．In other words
C．Besides
D．However
位于小指桡侧指甲根角旁0.1寸的腧穴是（）。
A.少冲
B.少府
C.少泽
D.少商
E.中冲
