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问题 单项选择题

交叉配血时，患者的红细胞与所有人的血清都凝集，其可能原因为（）

A.ABO血型鉴定错误

B.Rh血型鉴定错误

C.红细胞悬液过浓

D.红细胞受到细菌污染

E.红细胞悬液过淡

答案

参考答案：D

改错题
短文改错。
Dear Alice,
I have just got some good news to tell to you.
I win a national prize for painting last week.
My father was so pleasing that he suggested
I go to England for a holiday. I'd like to staying
there for half a month, visiting place of interest 
or practicing my English as well. We've been
writing to each for nearly a year now. I have
often dreamed of talk face to face with you. 
I imagine you'll be at vacation yourself by that
time. Perhaps we could go out to doing some
sightseeing together.
                                        Best,
                                        Lily 		1. _____
2. _____
3. _____
4. _____
5. _____
6. _____                        
7. _____
8. _____
9. _____
10. _____
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单项选择题

使观摩活动起到积极作用的前提条件是（）

A.参与观摩的教师水平

B.专家参加点评

C.大家充分研讨

D.正确的分析评价
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