20个月小儿的乳牙数为()
A．8～10颗
B．10～12颗
C．12～14颗
D．14～16颗
E．10～18颗
参考答案：D
He couldn't _________an answer when I asked him why he was late.
A．come over
B．cat up with
C．come out
D．come up with
塞因塞用的治则，适用的病证是（）
A.寒热错杂
B.真寒假热
C.真热假寒
D.真虚假实
E.真实假虚
