选择句子，补全对话。

A：What's wrong with you, Alan?

B：　　1　　 I have a cold．

A：I'm sorry to hear that．　　2　　

B：But I'm busy and I must finish my homework．

A：　　3　　 Then you can hand in your homework later．

B：Maybe you’re right．　　4　　

A：Don't say that．　　5　　 You'd better lie down and have a good rest now．

B：OK, I'll ask for leave right away．Thank you very much．

阅读下面短文，然后根据短文内容回答问题。

　　People go in for various kinds of physical training, and winter swimming is one of them．We can have a cold wind bath, an icy water bath and a sunbath at the same time in the open air of winter．When we have taken off our clothes and are exposed to the cold air, all parts of our body are stirred up by the cold, making us eager to go into the water．

　　We dive into the cold water and swim．We come out just when our hands and feet are beginning to feel numb．The only thing we think about in the cold water is how to withstand to cold．At this moment our brain is relaxed and at rest．This improves our metabolic functions(新陈代谢)．

　　After the‘three baths’of air, water and sun, we feel warm, relaxed and comfortable．

　　Winter swimming is enjoyable and good for health．That is why it is becoming more popular than ever before．

1．Which is not physical training, hiking, swimming or shopping?

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2．What does the expression“feel numb”mean?

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3．How do people feel after winter swimming?

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4．Do our brains work when we have winter swimming?

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5．What does the writer think of winter swimming?

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