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(1)物质B的化学本质是 ______________。
(2)物质A为____________,是由效应T细胞分泌,又能诱导生成更多的效应_________ 细胞,这是一种____________调节机制。
(3)效应T细胞与靶细胞密切接触,激活靶细胞内的_____________,并使其通透性、渗透压发生改变,最终___________,释放出病毒与抗体结合,使病毒失去_________________________宿主细胞的能力。
(4)T细胞由__________分化而来,成熟于______________,并随血液和淋巴在体内流动。T细胞在人体免疫应答中除具有图示增殖分化的功能外,还能 ______________。 查看习题详情和答案>>
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从B栏中找出与A栏相对应的答语。(10分)
A
1.What are your favourite clothes?
2.I like your skirt.
3.I like skirts.
4.Whose pants are these?
5.Is this your hat?
6.What’ s your favourite colour?
7.How many trees can you see in the picture?
8.Are they new?
9.Do you like English?
10.Thank you very much.
B
A.No, it isn’t. It’s too big. |
B.Thanks. |
C.We’re the same. |
D.You’re welcome. |
E. Yes, I do. Very much.
F. Yes, they’re new. They’re from my mom.
G. Shirts are my favourite clothes.
H. Red.
I. They are Li Ming’s.
J. I can see six.
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