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问题 单项选择题

患者男性，60岁。咳嗽20年，冬春加重，近5年出现气喘。双肺广泛哮鸣音及肺底湿音，最可能诊断是（）。

A.支气管哮喘

B.支气管扩张

C.阻塞性肺气肿并发感染

D.支气管肺癌

E.喘息型慢性支气管炎

答案

参考答案：E

选择题

某小岛上原有果蝇20000只，其中基因型VV、Vv和vv的果蝇分别占15%、55%和30%。若此时从岛外引入了2000只基因型为VV的果蝇，且所有果蝇均随机交配，则F1中V的基因频率约是[ ]

A．43%

B．48%

C．52%

D．57%
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完形填空

请认真阅读下面的短文，在答题卡上标有题号的横线上，根据首字母提示，写出空缺处该词的正确形式。每空只写一词

These years, with the development of society(社会),more and more teenagers have suffered  from stress. Some of the problems can make them feel very 小题1:w   and unhappy all day. Who can help them? A teacher from a college tried his best to help them. He thought of a lot of小题2:w    to help them. On Monday and Thursday, you can 小题3:c   his hotline. Here are some ideas how to keep the young men healthier in every way.

小题4:F   ,it is very important to keep healthy. To get 小题5:e   sleep every day is also necessary. Try to have a healthy小题6:d   every day.

Secondly ,maybe you are not the top student. It doesn't 小题7:m   .The most important thing is to work hard. If you try your best, your teachers and parents will understand you. If you have some problems, you should be 小题8:a   to talk with your teachers and parents. They can help you. Remember to小题9:s   your happiness and小题10:s   with your good friends. Sometimes you can go out for a walk．

In a word, you can try to make you happy by yourselves. I'm sure you can be happy every day.
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