题目内容
B. crosses
C. circulates
D. circles
完型填空（共20小题；每小题1.5分，满分30分）
阅读下面短文，掌握其大意，然后从36—55各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上涂黑。
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 36 only once-for a woman who had merely fainted. But the 37 made me quite curious about how 38 this kind of thing happens. I wondered what I would do if 39 with a real mid-air medical emergency-without access 40 a hospital staff and the usual emergency equipment. So 41 the New England Journal of Medicine last week 42 a study about in-flight medical events, I 43 it with interest.
The study estimated that there are a(n) 44 of 30 in-flight medical emergencies on U.S. flights every day. Most of them are not 45 ; fainting and dizziness are the most frequent complaints. 46 13% of them-roughly four a day-are serious enough to 47 a pilot to change course. The most common of the serious emergencies 48 heart trouble, strokes, and difficult breathing.
Let’s face it: plane rides are 49 . For starters, cabin pressures at high altitudes are set at roughly 50 they would be if you lived at 5,000 to 8,000 feet above sea level. Most people can tolerate these pressures pretty 51 , but passengers with heart disease 52 experience chest pains as a result of the reduced amount of oxygen flowing through their blood. 53 common in-flight problem is deep venous thrombosis（血栓）-the so-called economy class syndrome（综合症）. 54 happens, don’t panic. Things are getting better on the in-flight emergency front. Thanks to more recent legislation（立法）, flights with at 55 one attendant are starting to install emergency medical equipments to treat heart attacks.
36. A. called B. informed C. addressed D. surveyed
37. A. accident B. incident C. condition D. disaster
38. A. soon B. many C. long D. often
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41. A. before B. when C. since D. while
42. A. collected B. discovered C. conducted D. published
43. A. consulted B. read C. consumed D. considered
44. A. amount B. sum C. average D. number
45. A. significant B. common C. heavy D. serious
46. A. For B. But C. And D. So
47. A. require B. engage C. inspire D. command
48. A. include B. imply C. confine D. contain
49. A. enjoyable B. favorable C. peaceful D. stressful
50. A. who B. which C. what D. that
51. A. mentally B. easily C. neatly D. naturally
52. A. ought to B. used to C. may D. need
53. A. Any B. Other C. One D. Another
54. A. Whatever B. Whenever C. Whichever D. Wherever
55. A. most B. least C. worst D. best
When did you last see a polar bear(北极熊）? On a trip to a zoo,perhaps? If you had attended a winter activity in New York a few years ago, you would have seen a whole polar bear club. These "Polar Bears" are people who meet frequ
ently in the winter to swim in freezing cold water. That day, the air temperature was 3℃, and the water temperature was a little higher. The members of the Polar Bear Club at Coney Island, New York are usually about the age of 60. Members must satisfy two requirements. First, they must get along well with everyone else in the group; this is very important because there are so many different kinds of people in the club. Polar Bears must also agree to swim outdoors at least twice a month from November through February.
Doctors don't agree about the medical effects of cold-winter swimming. Some are worried about the dangers of a condition in which the body's temperature drops so low that finally the heart stops. Other doctors, however, point out that there is more danger of a heart attack during summer swimming because the difference between the air temperature and water temperature is much greater in summer than in winter.
The Polar Bears themselves are satisfied with the benefits of cold-water swimming. They say that their favorite form of exercise is very good for the circulatory system(循环系统）because it forces the blood to move fast to keep the body warm. Cold-water swimmers usually turn bright red after a few minutes in the water. A person who turns blue probably has a very poor circulatory system and should not try cold-water swimming.
The main benefits of cold-water swimming are probably mental.The Polar Bears love to swim all year round; they find it fun and relaxing. As one 70-year-old woman says,"When I go into water, I pour my troubles into the ocean and let them float away."
【小题1】The members of the Polar Bear Club must meet the following requirements except that_____.
| A．they must swim outdoors at least 8 times in the four cold months |
| B．they must reach the age of 60 |
C．they should  be easy to make friends with |
| D．they must agree to swim outdoors from November through February |
| A．Polar Bears are bears swimming in freezing water |
B．cold -water swimming can make the body temperature dangerously high |
| C．you are healthy if cold-water swimming turns your skin color blue |
| D．cold-water swimming causes more heart attacks in summer than in winter |
| A．it is an easy way to keep the body warm in winter | B．they can remain young |
| C．they find it enjoyable and interesting | D．they might meet fewer troubles in life |
| A．the requirements of the Polar Bear Club |
| B．a group of cold-water-swimming livers |
| C．the Polar Bears' life in New York |
| D．doctors' ideas about cold-water swimming |