Both of the rules are broken. I want to buy a ______ one.
A.three
B.third
C.forth
D./
答案:B
Ⅱ度深覆指上前牙牙冠在垂直向超过下前牙牙冠()
A.小于冠1/3
B.超过冠1/3而不足1/2
C.超过冠1/2而不足2/3
D.超过冠3/4
E.超过冠2/3
白前的功效是
A.补肾纳气平喘B.降气祛痰止咳C.消痰软坚散结D.清肺滑痰止呕E.泻肺止咳平喘