与过敏性休克有关()
A.自身变性的IgG
B.DNA-抗DNA复合物
C.抗甲状腺刺激素受体的抗体
D.免疫血型抗体
E.组胺
参考答案:E
—________ two months enough for the project to be finished?
—I am afraid not. The professor is ill and only after he recovers ______ go on with it.
A.Is; he can
B.Are; he can
C.Are; can he
D.Is; can he
精子细胞核位于精子的()
A.头部
B.颈部
C.体部
D.尾部
E.体尾交界部