患者，男，20岁，奔跑后出现呼吸困难，喘憋伴哮鸣音。查体：双肺满布哮鸣音。
为明确诊断应做何种检查（）
A.心电图
B.运动激发试验或舒张试验
C.皮肤过敏源试验
D.B超
E.胸部X片
参考答案：B
解析：运动性哮喘多于运动时出现胸闷、咳嗽和呼吸困难。确诊检查：支气管激发试验或运动试验阳性；支气管舒张试验阳性；昼夜PEF变异率≥20%。
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| 先阅读短文，然后从文中每小题的四个选项中选出一个可以填入短文中相应空白处的最佳答案。 I did very badly at school. My headmaster thought I was useless and when I was 14 he said, “You’re never going to be (1) but a failure(失败者). After five years of poor jobs, I fell (2) with a very nice girl. But her mother said to me, “You’ve (3) in everything you’ve ever done. You can’t give any happiness to my daughter!” It was the frustrating thing that could have changed me later. I decided to do something (4) about my life, because I wanted to show her that what people said about me was (5) . So I tried hard with my writing and went to college. My first book came out while I was at college. After college (6) during the day in high schools and went to evening classes at college. Later, I gave up that _(7)_job to write full time. At the same time, I was offered a part-time job at Leeds University. I began to feel (8) of myself -here was once a poor boy who’d left school early, now teaching at the university. My writing career(生涯) (9) when I discovered my own style. Now I’m rich and (10) , have been on TV, and met lots of film stars. But what does that mean? I just wish all the people who have put me down had said: “I believe in you. You’ll succeed.” | ||||
| ( )1. A. anything ( )2. A. work ( )3. A. failed ( )4. A. difficult ( )5. A. terrible ( )6. A. stayed ( )7. A. boss ( )8. A. proud ( )9. A. set off ( )10. A. cool | B. something B. love B. won B. easy B. excellent B. laught B. scientist B. sad B. went off B. famous | C. everything C. help C. beaten C. negative C. wrong C. lived C. teacher C. tired C. broke off C. clever | D. nothing D. study D. succeeded D. positive D. right D. studied D. student D. happy D. took off D. helpful | |