穿山甲的功效为（）
A.活血消癥，下乳排脓
B.活血消癥，攻毒散结
C.破血逐瘀，行气消积
D.破血疗伤，通经止血
E.破血消癥，排脓生肌
参考答案：A
Everybody thinks little of the film．In fact, there is no _________of it being tried out in the film festival．
A．sign
B．use
C．possibility
D．doubt
每种阀门都用一个特定型号表示，阀门型号由（）个单元组成。
A.5
B.6
C.7
D.8
