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It goes without saying that the time is usually limited (有限的). Even a second is very important. 【小题3】
But it is a pity that there are a lot of people who do not know the importance of the time. They spend their limited time smoking, drinking and playing. 【小题4】
In a word, we should save time. 【小题5】 Remember we have no time to lose.
| A．That is why we must not waste time. |
| B．Time is money. |
| C．They don't know that wasting time means wasting part of their own lives, |
| D．We should make full use of our time to do something useful. |
F. We shouldn't leave today's work for tomorrow. 查看习题详情和答案>>
【小题1】 Which road sign tells us that we must NOT turn right?
【小题2】Outside our school there’s a sign like this
. What should the drivers to when they see it?| A．They must stop the car immediately and wait there. |
| B．They must take a U-turn there. |
| C．They mustn’t even stop the car in that area. |
| D．They mustn’t drive the car into that area. |
During the day we work and play, and at night we sleep. Our body rests when we sleep. In the morning we are ready to work and play again. Our body grows most when we are asleep. Children who are tired usually need sleep. We can get better at our lessons after having plenty of rest. Boys and girls who are eight or nine years old need ten hours of sleep every night. Our body needs plenty of air when we are asleep. If we do not get enough fresh air, we will feel tired when we wake up. While in bed we must not cover our head，our lungs need to get enough fresh air. If we open our windows at night, we can have plenty of fresh air. Cool air is better than warm air. Boys and girls who want to be strong must get plenty of sleep.
【小题1】Our body grows most while we are _______.
A. exercising B.playing C.sleeping
【小题2】Too little sleep makes us _______.
A.tired B.hungry C.happy
【小题3】_______ during the sleep may cause us to feel tired in the morning.
A.Too much air B.Not enough fresh air C.Too much cold air
【小题4】How many hours of sleep should 9-year-old children have every night?
A.8 hours. B.9 hours. C.10 hours.
【小题5】What do the lungs need most?
A.Fresh air. B. Exercise. C.Warm air.
During the day we work and play, and at night we sleep. Our body rests while we sleep .In the morning we are ready to work and play again. Our body grows most while we are asleep. Children who are tired usually need sleep. We can get better at our lessons after we have had plenty of rest. Boys and girls who are eight or nine years old need ten hours of sleep every night.Our body needs plenty of air when we sleep. If we do not get enough fresh air, we will feel tired when we wake up. While in bed we must not cover our head.Our lungs need to get enough fresh air. If we open our windows at night, we can have plenty of fresh air.Cool air is better than warm air.Boys and girls who want to be strong must get enough and plenty of sleep.
1.Our body grows most while we are.
A．eating B．playing C．sleeping D．exercising
2.Too little sleep makes us
A．tired B．hungry C．happy D．grow
3..What may cause us to feel tired in the morning?
A．Too much air B．Not enough fresh air
C．Too much cold air D．Too much sleep
4.How many hours of sleep should nine-year-old children have ?
A．Eight hours B．Nine hours C．Ten hours D．Eleven hours
5.What does the lung need most ?
A．Fresh air B．Covering C．Warm air D．Exercise
查看习题详情和答案>>
Most people believe we must not drink sea water. They believe that if we do, we shall be very ill because of all the salt in the water. A doctor called Alain Bombard did not believe this. He thought that people could stay alive by drinking sea water and eating small fish, animals and plants from the sea. On 19 October 1953, he set out in a small boat to cross the Atlantic Ocean(大西洋). He did not take any food or water with him.
Every day Dr. Bombard drank just a little sea water. He also caught fish and they had water in them. He drank this water. He could not cook the fish, so he ate them as they were. He took small plants from the sea, which gave him more food.
Dr. Bombard became hot, tired and quite ill, but after 65days at sea he was still alive. He traveled 2,750 miles from one side of the Atlantic Ocean to the other, and on 24th,December 1953, he reached Barbados.
He lost 20 kilos, but he showed that people could live on sea water, the animals and plants in the sea.
【小题1】Alain Bombard was ______.
| A．an old sailor | B．a fisherman | C．a cook | D．a doctor |
| A．sea water was dangerous | B．sailors often died |
| C．people could drink sea water and not die | D．fish were good for people |
| A．a large ocean | B．a town | C．a boat | D．a ship |
| A．sea water | B．food that he cooked | C．only fish | D．sea water, fish and small plants |
| A．drinking sea water | B．a dying sailor | C．a kind doctor | D．eating good food |