结肠癌的DukesB期是指（） A.癌局限于肠壁内 B.癌穿透肠壁侵入_爱下问搜题

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问题单项选择题

结肠癌的DukesB期是指（）

A.癌局限于肠壁内

B.癌穿透肠壁侵入浆膜或浆膜外，但无淋巴结转移

C.癌穿透肠壁伴结肠壁或结肠旁淋巴结转移

D.癌穿透肠壁伴系膜及根部淋巴结转移

E.已有远处转移或腹腔转移

答案

参考答案：B

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完形填空

Boys and girls,
Attention, please! Do you know     to keep safe in our daily（日常的）life? Today I’d like    you some ways to keep safe.
1. Always play in a     place. A park is a safe place     there are no cars or buses in it.
2.     the traffic rules, please! Before crossing a road,     and look both ways ——look left, look right and look left     .
3. Never put your head or hands     a car, a bus or a train. Many people get     or lose their lives by doing so.
4. Don’t     a stranger（陌生人）or go with him/her.
That’s all. All the students should obey the rules anytime(任何时候).