As a physician who travels quite a lot, I spend a lot of time on planes listenin

　 As a physician who travels quite a lot, I spend a lot of time on planes listening for that dreaded “Is there a doctor on board?” announcement. I’ve been 　16 only once — for a woman who had merely fainted. But the 　17 made me quite curious about how 　18 this kind of thing happens. I wondered what I would do if 　19 with a real midair medical emergency — without access 　20 a hospital staff and the usual emergency equipment. So 　21 the New England Journal of Medicine last week 　22 a study about in-flight medical events, I read it 　23 interest.

The study estimated that there are a(n) 　24 of 30 in-flight medical emergencies on U.S. flights every day. Most of them are not 　25 ; fainting and dizziness are the most frequent complaints. 26 13% of them — roughly four a day — are serious enough to 　27 a pilot to change course. The most common of the serious emergencies 　28 heart trouble, strokes, and difficulty breathing.

Let’s face it: plane rides are 　29 . For starters, cabin pressures at high altitudes are set at roughly 30 they would be if you lived at 5,000 to 8,000 feet above sea level. Most people can tolerate these pressures pretty 　31 , but passengers with heart disease 　32 experience chest pains as a result of the reduced amount of oxygen flowing through their blood. 　33 common in-flight problem is deep venous thrombosis — the so-called economy class syndrome (综合症). 　34 happens, don’t panic. Things are getting better on the in-flight-emergency front. Thanks to more recent legislation (立法), flights with at 35 one attendant are starting to install emergency medical kits to treat heart attacks.

16. A. called B. addressed 　 C. informed 　 D. surveyed

17. A. accident 　 B. condition 　 C. incident D. disaster

18. A. soon B. long 　 C. many 　 D. often

19. A. faced 　 B. treated 　 C. identified 　 D. provided

20. A. for 　 B. to 　 C. by D. through

21. A. before 　 B. since C. when 　 D. while

22. A. collected 　 B. conducted 　 C. discovered D. published

23. A. by 　 B. of C. with 　 D. in

24. A. amount B. average 　 C. sum 　 D. number

25. A. significant B. heavy C. common D. serious

26. A. For 　 B. On C. But 　 D. So

27. A. require　 B. inspire 　 C. engage 　 D. command

28. A. include B. limit 　 C. imply D. contain

29. A. enjoyable 　 B. promoting　 　 C. dull 　 D. stressful

30. A. who　 B. what C. which 　 D. that

31. A. severely 　 B. unwillingly C. easily 　 D. casually

32. A. ought to 　 B. may 　 C. used to 　 D. need

33. A. Any B. One 　 C. Other 　 D. Another

34. A. Whatever B. However　 　 C. Whenever 　 D. Wherever

35. A. most B. worst 　 C. least 　 D. best

试题答案

16-20 ACDAB    21-25 CDCBD  26-30 CAADB    31-35 CBDAC