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问题 单项选择题

男，52岁，结肠癌术后2年，定期复查，肿瘤相关抗原检测中对预测大肠癌复发较好的指标是（）

A.AFP

B.CEA

C.VCA-IgA

D.CA199

E.CA50

答案

参考答案：B

改错题

短文改错。
     此题要求改正所给短文中的错误。对标有题号的每一行作出判断：
     如有错误（每行只有一个错误），则按下列情况改正：
     该行多一个词：把多余的词用斜线（＼）划掉，在该行右边横线上写出该词，并也用斜线（＼）划掉。
     该行缺一个词：在缺词处加一个漏词符号（∧），在该行右边横线上写出该加的词。
     该行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
     注意：原行没有错的不要改。

It is a pleasure for me to write this letter to tell how much
I enjoyed my stay in your whole family last week. This was my
first visit to a English family. At first, I was worried about my
poor English. And when I saw your wife and children waiting for
me with warm smile of welcome on their faces. I immediately knew 
that everything would be all right. There are many more happy
memories of a week that I will keep with me forever. I particularly
enjoyed driving through the countryside with you and saw the 
changing colors of the leaves on the trees. I also like the 
fishing trip. It was such much fun. 		1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____                                          
10. _____
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单项选择题

处理合同纠纷的原则是（）。

A、协商为主、调解优先原则

B、维护业主利益的原则

C、严格监理的原则
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