上腹部横切扫查,横“8”字的交叉点是胃的哪部分
A.胃体
B.贲门
C.胃窦
D.胃角
E.胃底
参考答案:D
______ is a grammatical category of nouns in English,as illustrated by the simple sentence “We are students”. ( )
A.Person
B.Case
C.Number
D.Degree
中国铁路车票一般分为几种()
A.3种
B.4种
C.5种
D.6种