问题 单项选择题

乳腺癌放射治疗时,切线野照射剂量为()。

A.40Gy/20次/4周

B.40Gy/25次/5周

C.50Gy/20次/4周

D.50Gy/25次/5周

E.60Gy/25次/5周

答案

参考答案:D

解析:早期乳腺癌作切线野照射时不需加填充物,照射剂量是50Gy/25次/5周。晚期乳腺癌则应加填充物提高皮肤剂量。

阅读理解

阅读理解

         阅读下列短文,从每题所给的A 、B 、C 、D四个选项中, 选出能回答所提问题或完成所给句子的最佳选项。

        When  English people meet, their first words will be “How do you do?” or“How are you?” After the

reply “How do you do?” or “Fine, thank you, and you?” they often talk about the weather. The reason for this is not simply that their weather is interesting and changeable but that the English people don't like

talking about personal matters (私事) with people who are not friends. Talking about the weather can be a useful way of starting a conversation with a stranger in public.

1. What are the first words when English people meet?  

A. Say “hello” to each other.    

B. Say “goodbye” to each other.

C. Talk about the weather          

D. Talk about their personal matters.

2. What's the answer to “How do you do”?

A. Fine, thank you, and you?        

B. How are you?

C. How do you do?                

D. I'm fine, too.

3. Why do the English people often talk about the weather?

A. Because the weather is interesting.

B. Because they don't like talking about personal matters with stranger.

C. Because the weather is changeable.

D. A, B and C are all right.

4. From the article, you know that the English people talk about the weather to ______

A. finish a conversation with a friend.    

B. start a conversation with a stranger.

C. say “goodbye” to a stranger.    

D. study the weather.

5. Which sentence is not right?

A. English people like talking about the weather.

B. English people usually talk about personal matters with friends but not strangers.

C. English people like talking about personal matters with strangers in public.

D. The weather in England is interesting and changeable.

判断题