1. (2021八上·诸暨月考) 阅读理解

We all know that a good night's rest helps us stay healthy. After we sleep for 7 or 8 hours in bed and wake up next morning, our mind is better prepared to memorize and learn something.

But what about getting a rest during the middle of the day?

Scientists say, "Short period of sleep, napping may help learning and memory. Napping can help our children learn more quickly. It can also help older people remember longer. "

Take China as an example. Chinese people are used to napping after lunch.

Recently researchers made a survey among nearly 3, 000 Chinese people over 65 years old.

The research (调查) shows that napping for about an hour is the best.

However, these are the findings for those over the age of 65. Doctors say that napping for about an hour may be too long for young and healthy people. And they believe that half an hour is enough to stop young and healthy people from feeling tired. By doing so, it will help them stay awake.

Doctors also say, "If you have trouble falling asleep at night, take a daytime nap for less than 45 minutes and don't nap after 3 pm in the afternoon.

1. （1） The underlined word "napping" means_________.

   A . a long sleep at night B . a short sleep at night C . a long sleep during the day D . a short sleep during the day
3. （2） Napping for about _________is the best for the people over the age of 65.

   A . an hour B . half an hour C . 7or8 hours D . 15 minutes
5. （3） If you have trouble falling asleep at night, you'd better nap for  _______before 3 p. m.

   A . an hour B . less than 45 minutes C . more than 45 minutes D . half an hour
7. （4） What is the passage mainly about?

   A . The importance of having a good night's sleep. B . Napping is good for our health. C . Napping may help learning and memory. D . How long should people take a nap during a day?