【单选题】

If you suffer from diabetes, talk to your doctor about what kind of exercise is right for you. The type of exercise you can do will depend on whether you have any other health problems. Most doctors recommend aerobic exercise, which makes you breathe more deeply and makes your heart work harder. If you have problems with the nerves in your feet or legs-, your doctor may want you to do a type of exercise that won’t put stress on your feet.

There are some risks to exercising for people with diabetes, but the benefits far out-weigh the risks.Exercise changes the way your body reacts to insulin. Regular exercise makes your body more sensitive to insulin (胰岛素 ), and your blood sugar level may get too low—called hypoglycemia (血糖过少)—after exercising. You may need to check your blood sugar level before and after exercising. Your doctor can tell you what your blood sugar level should be before and after exercise. It is especially important to watch your blood sugar level if you exercise in really hot or cold conditions, because the temperature changes how your body absorbs insulin.
If your blood sugar level is too low or too high right before you plan to exercise, it’s better to wait until the level improves. It is especially important to watch your blood sugar level if you exercise in really hot or cold conditions, because the temperature changes how your body absorbs insulin.Also, you may feel a change in your heartbeat, suddenly sweat more, feel shaky or anxious, or feel hungry. When you feel this way, you should stop exercising and follow your doctor’s advice about how to treat hypoglycemiA、
Many people with diabetes have problems with the nerves in their feet and legs, sometimes without even knowing it. So it’s important that you wear shoes that fit well and have plenty of room when you exercise. Otherwise you could develop blisters or other sores on your feet that can lead to infection and other problems. You should check your feet before and after you exercise to make sure there are no blisters or other sores.
When you’re exercising, your body uses more fluid to keep you cool.By the time you feel thirsty, you may already be getting dehydrateD、Dehydration ( not enough fluid in your body) can affect your blood sugar level.Drink plenty of fluid before, during and after exercise.
What else should diabetic patients pay attention toA．They should drink as much water as possible when they feel thirsty.
B．They should continue exercising despite sore feet.
C．They had better not exercise indoor.
D．They had better drink at different stages of their exercises.