It is very   1   for us to stay in good health. We must have good eating and sleeping habits in life. Eating more fruit and vegetables   2   good for us .We are supposed to   3   at least 8 hours a day and take part in the healthy activities as    4   as possible, for example, climbing mountains, running in the morning or swimming. It is necessary to keep    5   and get on well with the people around us.

1. A．important               B．unnecessary        C．impossible        D．importance

2. A．are                    B．am                C．be                D．is

3. A．asleep                  B．sleepy             C．sleep             D．slept

4. A．much                   B．many              C．little               D．few

5. A．happiness               B．unhappy            C．happy             D．happily

Good health is very important. Everyone should do all he can to stay healthy. Being in good health means having both body and mind in good order, free from illness and pain.

    Good food, plenty of water, cleanness and plenty of rest all help in keeping our machines running as they should. Food does many things for our bodies. It gives what we need for keeping good health. It gives us energy for work and play. No food gives everything we need. We should eat foods of different kinds. Having enough to eat is not the same as having the right food.

    The water we drink helps wash away wastes formed inside our bodies. It also puts back the water we lose when we perspire(流汗). Our bodies are actually more than half water. We must drink enough to replace what we lose.

    We feel better and look better when we are clean. A bath every one or two days is a good rule for most of us. Brushing our teeth is important part of keeping clean.

    Sleep is the best kind of rest. Growing children need more sleep than grown-ups. Children's bodies not only have to be repaired; they also have to grow, No one's body can grow bigger properly while he is working and playing and wearing it out (疲劳).

    It has been useful to work for good health. Millions of years ago, people live only 20 years. Now people can live about 70 years. It has gone up 20 years just since the beginning of the present century.

1.You should have foods of different kinds because _________.

A. some foods are not good

B. no food can give everything you need

C. different foods taste different

D. different people like different foods

2.We must drink enough water to replace what we lose. Here replace means    .

A.感觉        B. 放置         C.减少        D. 代替

3.At the beginning of the present century people live about _________.

A. 20 years.     B. 70 years      C. 40 years     D. 50 years

4.Which of the following is NOT true?

A. Grown-ups sleep less than children because they have a lot of work to do.

B. If one's mind does not work well, he is not considered to be healthy.

C. One cannot grow well when he works too hard.

D. About half of man's body is water.

( Da Wei comes across Li Lei, who is studying, in the school library. )
A: Hi, Li Lei. Are you busy with your homework now?
B: Oh, yeah, Da Wei. And you?
A: I'm here for a book. Hey, Li Lei. Have a break! We should be outside in the fresh air. It's good for us.
B: Sorry, I can't.    1     I must hand it. in tomorrow.
A: Oh, I see. But we can't always stay indoors.  We must often take exercise.    2  
B: Never.  I hardly have time now.  A sea of homework almost takes up all my free time.  It's sad but that's life.   3   
A: You mean my life? In fact, I'm also very busy like you. But you know I like sports.    4     When ever I have a little time, I will try them.
B: No wonder you are so energetic.
A: Yeah, better health, better grades.     5   
B: Yes, you are right.  It sounds as if should also try to exercise often in the future.  Da Wei, shall we play basketball for a while now?
A: OK. Let's go!