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的最大值。
的最小值。
（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>>
| 10% Off Show this voucher（优惠券）at the Book Store to get a 10% discount(减价) on any books you buy. We have lots of books to choose from, including children’s books, novels, travel guides and hobbies. You’re sure to find something that you will enjoy. |
| Assistant Wanted For a busy restaurant work on weekends. All meals are free. Call at 4323577 for more information. |
| Lost Cat Help me find my pet cat! She is 4 years old. She has long white hair and a long tail. Her name is Cathy. Call Carrie at 2853527. |
| A．2853527 | B．4323577 | C．4332577 | D．2835527 |
| A．show this voucher | B．buy some tickets | C．buy some gifts | D．buy some books |
| A．children’s books | B．travel guides | C．magazines | D．novels |
| A．Cathy | B．The assistant | C．Carrie | D．Mary |
| A．call 2853527 | B．call 4323577 | C．work on Monday | D．pay nothing |
|
10% Off Show this voucher（优惠券）at the Book Store to get a 10% discount(减价) on any books you buy. We have lots of books to choose from, including children’s books, novels, travel guides and hobbies. You’re sure to find something that you will enjoy. |
|
Assistant Wanted For a busy restaurant work on weekends. All meals are free. Call at 4323577 for more information. |
|
Lost Cat Help me find my pet cat! She is 4 years old. She has long white hair and a long tail. Her name is Cathy. Call Carrie at 2853527. |
1.If Mary wants to be an assistant, she can phone the number______.
|
A．2853527 |
B．4323577 |
C．4332577 |
D．2835527 |
2.You can get a 10% discount on any books if you ____at the Book Store.
|
A．show this voucher |
B．buy some tickets |
C．buy some gifts |
D．buy some books |
3.There are several kinds of books on sale except______.
|
A．children’s books |
B．travel guides |
C．magazines |
D．novels |
4.______lost the white cat.
|
A．Cathy |
B．The assistant |
C．Carrie |
D．Mary |
5.The assistant has lunch at the restaurant, she should______.
|
A．call 2853527 |
B．call 4323577 |
C．work on Monday |
D．pay nothing |
查看习题详情和答案>>
10 years ago， _________ only one classroom building in our school. And in 10 years， _________ five classroom buildings in our school.
|
A．there will be, there are |
|
B．there was, there will be |
|
C．there will be; there was |
|
D．there was, there are |
查看习题详情和答案>>