第二部分．阅读理解（共25小题。第一节每小题2分，第二节每小题1分；满分45分）
第一节阅读下面五篇短文，从每题后所给的四个选项中选出最佳答案。
Most of us lead unhealthy lives; we spend far too much sitting down. If in addition we are careless about our diets, our bodies soon become loose and fatty and our systems slow moving. There are some aspects(方面) of our unhealthy lives that we cannot avoid. I am thinking of such features of modern city life as pollution, noise, rushed meals and stress. But keeping fit is a way to reduce the effects of these evils. The usual suggestion to a person who is looking for a way to keep fit is to take up some sport or other. While it is true that every weekend you will find people playing football and hockey in the local park, they are outnumbered a hundred to one by the people who are simply watching them.
　　For those who do not particularly enjoy competitive sports — and it is especially difficult to do so if you are not good at them — there are such separate activities as cycling, walking, jogging and swimming. What often happens though is that you do them in such a leisurely way, so slowly, that it is doubtful if you are doing yourself much good, except for the fact that you have at least managed to get up out of your armchair.
　　Even after you have found a way for keeping in shape, through sport or gymnastics, you are still only half way to good health, because, according to the experts, you must also master the art of complete mental and physical relaxation(放松). It has to do with deep breathing, emptying your mind of all thoughts, meditation, and so on. Yoga, as practiced in the West, is the most widely known and popular of the systems for achieving the necessary state of relaxation. It seems ironical (讽刺性的), though, that as our lives have improved in a material sense we have found it increasingly necessary to go back to forms of activity — physical effort on the one hand and relaxation on the other — which were the natural way of life of our forefathers.
41. Pollution, noise and stress are examples of _____.
A. the causes of unfitness                                                         B. unavoidable things in town
C. the things we can completely do away with                 D. bad features of modern living
42. We don’t get much out of separate sports because we _____.
A. don’t do them very often                                                   B. don’t do them actively enough
C. find it hard to get out of our armchairs                          D. don’t find them interesting
43. To be healthy we must _____.
A. keep fit and active                                                              B. have a sound mind
C. be active and practise Yoga                                                        D. keep fit and learn to relax
44. Our forefathers were healthy because______.
A. their way of life closely connected with both exercise and relaxation
B. they were careful to get plenty of fresh air
C. they spent most of the time out of doors
D. their environment was not polluted