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问题 单项选择题 A1型题

下列免疫细胞间的相互识别中，错误的是（）

A.LFA-3与CDl

B.CTLA-4与B7

C.CD28与B7

D.ICAM-1与LFA-1

E.CD4与MHCⅡ类分子

答案

参考答案：A

连词成句

连词成句并翻译成汉语。

1. are     where     from     you  

                                                                                               ?

                                                                                               ？

2. to     time     go     it     is     home 

                                                                                               .

                                                                                               。

3. washing     am     the     dishes     dirty     I

                                                                                               .

                                                                                               。

4. hamburger     Jenny     a     eats     usually     for     lunch 

                                                                                               .

                                                                                               。   

5. far     live     too     I     school     from

                                                                                               .

                                                                                               。

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多项选择题

南北朝时期青海地区形成了（）。

A、西宁乐

B、凉州乐

C、湟中乐

D、狄乐

E、羌乐
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