不是无菌动物特征的是()
A.胎儿动物经剖宫产获得
B.抵抗力较强
C.可经无菌乳代母乳育成
D.对各种病原体的感受性相同
E.饲养在隔离系统中
参考答案:B
—Jack, is there ______ in today's newspaper?
—No, nothing. [ ]
A. anything important
B. something important
C. important anything
D. important something
AFP增高最常见于()。
A.结肠癌
B.肠结核
C.肝癌
D.胃溃疡
E.克罗恩氏病