海葵的身体为()
A、次生辐射对称
B、辐射对称
C、两侧对称
D、两辐射对称
参考答案:D
I recommend an English-Chinese dictionary, which I thought would be of great help to his studies. [ ]
A. buying
B. bought
C. to buy
D. he bought
捕获法ELISA检测的Ig类别是()
A.IgM
B.IgG
C.IgA
D.IgD
E.IgE