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问题 单项选择题

补体活性片段中过敏毒素作用最强的是（）

A.C3a

B.C4a

C.C5a

D.C4b

E.C3b

答案

参考答案：A

解析：C3a、C5a可以作用到肥大细胞和嗜碱性粒细胞上，引起类似过敏反应的病理变化，C3a活性较强。C4a也有较弱的过敏毒素作用。

填空题

根据句意和首字母提示每空填一个单词，使句意完整。

1. My grandfather thinks Beijing O__________ is very i__________. He likes it very much. 

2. You can l__________ a lot about Chinese h__________.                                  

3. My f__________ fruit is banana.                                                       

4. I can't speak J__________.                                                            

5. We want two good m__________ for our band.                                            

6. T__________ for your help.                                                            

7. S__________ is the last day of a week.                                                

8. School s__________ at 7:30 in the morning.                                            

9. I don't like thrillers because they're s___________.                                  

10. Jack Chen is a great a__________ movie star.                                          

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多项选择题

我国的教师职业道德，要求教师通过自觉的师德修养培养哪些品质（）

A、对本职业深厚的道德情感；

B、对学生、社会高度的职业责任感和师德良心；

C、尽心尽力、乐于奉献的职业信念和道德意志；

D、诲人不倦、为人师表等职业道德品质
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