把a3﹣4ab2分解因式,结果正确的是[ ]
A.a(a+4b)(a﹣4b)
B.a(a2﹣4b2)
C.a(a+2b)(a﹣2b)
D.a(a﹣2b)2
答案:C
I spent the whole day repairing the motorbike. The work was ____ simple. [ ]
A. nothing but
B. anything but
C. something of
D. all except
汉代最为著名的角抵戏是()。
A.优孟衣冠
B.东海黄公
C.踏摇娘
D.兰陵王