Exercise helps to keep us in good health. Doctors at the American Heart Association suggest getting at least 150 minutes of proper physical activity every week. Many people exercise for a few minutes every day or every other day. So, getting 150 minutes every week is easy.
But what about those times when you are sick? If you do not feel well, should you keep following your exercise habit? Health experts answer these and other questions.
Edward R. Laskowski is a doctor at the Mayo Clinic. He and other experts have a general rule of yes about exercising when you are sick.  It is usually fine to exercise, he explains, if your symptoms （症状）are all “above the neck". These signs may include a runny nose, a blocked nose, sneezing or a minor sore throat.
Geralyn Coopersmith is a physical fitness trainer who has written several books on exercise and nutrition. Both Coopersmith and Dr. Laskowski suggest taking a break from exercising if signs of your illness appear "below the neck". Pay special attention to symptoms such as chest congestion, extreme cough or pain in the stomach.
There are other symptoms that can tell you to avoid exercise. They include: a higher than normal body temperature, a sense of feeling extremely tired, and widespread muscle pain.
Both Coopersmith and Dr. Laskowski suggest listening to your body. If you feel really bad, take a break and let your body rest. If you don't feel too bad, these experts both suggest reducing the amount of exercise. For example, if you usually run, take a quick walk instead.
40. How long should people do exercise to keep healthy?
A. About 150 minutes per day. B. Around 100 minutes per day.
C. At least 150 minutes per week. D. No more than 100 minutes per week.
41. When will Edward R. Laskowski say no to exercise?
A. When your left leg is broken. B. When you have a runny noses.
C. When you have a blocked nose. D. When you have a minor sore throat.
42. What is the meaning of "listening to your body” in Paragraph 6?
A. Be careful with your cars. B. Learn to take advice of others.
C. Pay attention to body signals. D. Listen to music to keep healthy.
43. What will the writer be likely to agree with?
A. Practice makes perfect. B. Nothing seek, nothing find.
C. Put your heart into exercise. D. Act according to your abilities.
【答案】40. C    41. A    42. C    43. D
【解析】
这是一篇说明文。锻炼有助于保持身体健康，但是在感觉不适的时候，要看具体情况：如果病症出现在“颈部以上”的位置，通常可以锻炼；如果病症出现在“颈部以下”，请暂停锻炼。
【40题详解】
细节理解题。根据第一段中的" Exercise helps to keep us in good health. Doctors at the American Heart Association suggest getting at least 150 minutes of proper physical activity every week. " 可知，锻炼有助于保持身体健康，美国心脏协会的医生建议每周至少进行150分钟的适当体育锻炼，因此人们应该每周至少运动150分钟才能保持健康。故选C项。
【41题详解】
细节理解题。根据第四段中的“ Both Coopersmith and Dr. Laskowski suggest taking a break from exercising if signs of your illness appear "below the neck”可知，库伯史密斯和拉斯科夫斯基博士都建议，如果你的疾病迹象出现在“颈部以下”，就应该暂停锻炼。因此Edward R. Laskowski不赞同在左腿骨折时运动。故选A项。
【42题详解】
词句猜测题。根据第六段中的“If you feel really bad, take a break and let your body rest. If you don't feel too bad, these experts both suggest reducing the amount of exercise.”可知，身体不适时应休息一下。如果不是非常不舒服，可以减少运动量。因此，"listening to your body”意为“听从你的身体”，这符合C项（注意身体发出的信号）的描述。故选C项。
【43题详解】
推理判断题。根据最后一段中的“Both Coopersmith and Dr. Laskowski suggest listening to your body.”可知，这两个人都建议按照身体的舒适程度来决定运动与否以及运动量，作者并没有提出反对和质疑，即作者赞同二者的建议，这符合D项（根据你的能力采取相应的行动）的描述。故选D项。