网址：http://m.1010jiajiao.com/timu3_id_2764739[举报]
用所给动词的适当形式填空。
1. He __________ (take) a boat trip to Shanghai yesterday.
2. __________ you __________ (climb) the hill tomorrow?
3. You are so fat that you need ___________ (exercise) now.
4. Thank you for ___________ (invite) me to your party.
5. ---Where is Tom? ---He __________ (sit) in the reading room.
6. It takes me about half an hour a day ___________ (read) English.
7. Tom, ___________(get) on the bus at once.
8. Amy and Simon want __________ (know) where their friends are.
9. Mr Wu ____________ (teach) us English in the past.
10. What about __________(have) a cup of tea now?
查看习题详情和答案>>
petrol (汽油). They have to work hard so that they can pay for petrol. However, some people are trying
to stop driving to work..
People have found out that it is good to ride a bike to work. More and more people return to bikes.
Children often go to school by bike. But now businessmen are going to work by bike too. "The bike is
easy to use," says Molly, "and it is also very cheap. You can buy 300 bikes at the price of a small car. A
bike doesn't use expensive petrol. A 10-year-old child can learn to use a bike. And most bikes can be
used for a long time."
Mr. Brown goes to his hospital by bike every day. He says, "A bike doesn't need a lot of money, and
bike- riding is good for our health. Today most people get fat because they don't get enough exercise. So
I tell people to buy bikes. What's more, in big cities it's usually quicker to travel by bike than by bus or
by car. Drivers can't do anything but get angry when there is a traffic jam (交通堵塞)."
B. it's too expensive to drive to work.
C. some people stop to drive to work
D. it's cheap to ride a bike to work
B. workers
C. businessman
D. students
B. 300
C. 3,000
D. 30,000
B. 医生
C. 病人
D. 司机
B. there are too many cars
C. the traffic is heavy
D. cars are expensive for us
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Our body can make some vitamins
（维生素）. When sunlight shines on the skin（皮肤）, the body produces Vitamin D. Some vitamins cannot be made or stored in the body. Vitamin C is an example. If a person doesn't take in any Vitamin C for a long time, a deficiency（缺乏）can develop in the body.Vitamins are now added to many foods so that people take in more vitamins. For example, Vitamin D is added to milk. Because of rich foods, today deficiency diseases are not as common as they once were.
Many people also take vitamin pills. Most vitamin pills contain
（包含）man-made vitamins, which are made in labs. Natural vitamins are found in foods. The vitamins that are added to natural foods are also man-made.In the future, scientists may discover several new vitamins. New uses may also be discovered for the known vitamins. Scientists are experimenting to find out if vitamins can cure
（治愈）or prevent diseases like cancer and heart disease. It may be that vitamins are even more important than we think.(1)Our body can make some vitamins if _____________.
[ ]
A
．we take much exerciseB
．the sun shines on our skinC
．we eat much rich foodD
．all of the above(2)Eating enough food full of Vitamin C can make us ____________.
[ ]
|
A ．taller |
B ．pretty |
|
C ．fat |
D ．healthy |
(3)Vitamin pills are made ____________.
[ ]
A
．from all kinds of foodsB
．in the labC
．of fresh milkD
．from the sunlight(4)The scientists are working hard to _____________.
[ ]
A
．know whether vitamins can stop some illnessB
．make much more vitamin pillsC
．become well-known in the worldD
．help the patients who need Vitamin C(5)Which of the following is right according to the passage?
[ ]
A
．The vitamins that are added to natural foods are also natural.B
．If you want to be healthy, you'll have to eat more vitamin pills.C
．Vitamins are very important for our health.D
．We can take vitamin pills instead of natural vitamins to keep healthy. 查看习题详情和答案>>