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【单选题】
人体有两种免疫反应:一种是细胞免疫;另一种是体液免疫。细胞免疫在婴儿出生时已经完善,而体液免疫要在( )个月后才比较完善A.
6
B.
8
C.
9
D.
12
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反馈参考答案：
举一反三
【简答题】混合动力汽车按连接方式分类可以分为____、____、____。 二、选择题:(共10 题,每题3分,共计30分)
【单选题】He never wrote ________ his first one again.
A.
as good book as
B.
such good a book as
C.
so good a book as
D.
such good book as
【单选题】I can’t buy ________that one.
A.
as good a book as
B.
as a good book as
C.
such good book
D.
so good book as
【简答题】判断题(每题1分,共30分。)
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