抗菌、抗病毒、抗毒素的主要抗体是()
A.IgM
B.IgA
C.IgE
D.IgG
E.IgD
参考答案:D
根据所给音标或提示完成句子。
1. All the children are _____ / i k`s ai t i d / at New Year's Day.
2. F_____ is the second month of a year.
3. We have a long _____ (假期) in May.
4. 1st June is _____ Day.
5. _____ comes after Spring.
左心室增大的X线表现为()
A.后前位左室段延长,心尖下移
B.相反搏动点上移
C.左前斜位心后缘向后下突出,心后间隙变窄
D.右前斜位常无明显改变
E.侧位可见心后间隙缩小