The rival group ______ held to the peace agreement they had signed.
A. seldom
B never
C sometimes
D. often
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膀胱湿热引起的前阴病，宜选用以下何方：
A. 八正散
B. 猪苓汤
C. 龙胆泻肝汤
D. 补中益气汤
E. 萆薢藓分清饮
The letters referred to in the first paragraph must have ______.
A. complained that carbon monoxide had affected their own ability to think
B. complained that carbon monoxide had affected other people's ability think
C. opposed the limiting of the use of cars
D. proposed the limiting of the use of cars
What kind of haircut did the man want
A fashionable style.
B. A basic trim.
C. A little off the top and more off the sides.
D. A permanent wav
设f(x)=x2(x-1)(x-2)，则f'(x)的零点个数为______．
A. 0
B. 1
C. 2
D. 3
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