摘要: A. help B. make C. use D. stop

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Here is a page from a magazine called Future. Read the following information about things that may happen in ten years.

Cars will run on solar power (太阳能) and will be much cleaner. They will be much safer. For example, if you are too close to another car or if you are driving dangerously, your car will slow down or stop by itself.
New cities will have to be built in the sea. Some cities on water will have two levels (层). People will live on the upper level; the lower level will be used for traffic, shops and factories.
Biotechnology (生物技术) will make food better and healthier. Plants without insects or illnesses (病虫害) will be developed. The taste of fruit and vegetables will be better and food will be kept longer.
Many new ways to cure (治愈) illnesses will be found. People will use products of genetic engineering (基因产品) to cure more illnesses. However, some new illnesses will appear.
【小题1】What will happen in the future according to the passage?
A.The air won’t be much cleaner.
B.Cars will run by itself without a driver.
C.It’ll be much more dangerous to drive a car.
D.There’ll be fewer accidents and less pollution (污染).
【小题2】Where will new cities have to be built in the future?
A.In the sea. B.In the sky.
C.Underground.D.On the land.
【小题3】 What will be made better and healthier by biotechnology?
A.Medicine.B.Toys.
C.Food.D.Clothes.
【小题4】 Genetic engineering will help doctors to cure more________.
A.coldB.illnesses
C.cancerD.headache
【小题5】 Which is the best title (标题) of the passage?
A.Cars in the future.
B.Get ready for the future.
C.How to keep food longer?
D.Where will people live in the future?
查看习题详情和答案>>

Here is a page from a magazine called Future. Read the following information about things that may happen in ten years.

Cars will run on solar power (太阳能) and will be much cleaner. They will be much safer. For example, if you are too close to another car or if you are driving dangerously, your car will slow down or stop by itself.
New cities will have to be built in the sea. Some cities on water will have two levels (层). People will live on the upper level; the lower level will be used for traffic, shops and factories.
Biotechnology (生物技术) will make food better and healthier. Plants without insects or illnesses (病虫害) will be developed. The taste of fruit and vegetables will be better and food will be kept longer.
Many new ways to cure (治愈) illnesses will be found. People will use products of genetic engineering (基因产品) to cure more illnesses. However, some new illnesses will appear.
【小题1】What will happen in the future according to the passage?

A.The air won’t be much cleaner.
B.Cars will run by itself without a driver.
C.It’ll be much more dangerous to drive a car.
D.There’ll be fewer accidents and less pollution (污染).
【小题2】Where will new cities have to be built in the future?
A.In the sea.B.In the sky.
C.Underground.D.On the land.
【小题3】 What will be made better and healthier by biotechnology?
A.Medicine.B.Toys.
C.Food.D.Clothes.
【小题4】 Genetic engineering will help doctors to cure more________.
A.coldB.illnesses
C.cancerD.headache
【小题5】 Which is the best title (标题) of the passage?
A.Cars in the future.
B.Get ready for the future.
C.How to keep food longer?
D.Where will people live in the future?

查看习题详情和答案>>
Here is a page from a magazine called Future. Read the following information about things that may happen in ten years.

Cars will run on solar power (太阳能) and will be much cleaner. They will be much safer. For example, if you are too close to another car or if you are driving dangerously, your car will slow down or stop by itself.
New cities will have to be built in the sea. Some cities on water will have two levels (层). People will live on the upper level; the lower level will be used for traffic, shops and factories.
Biotechnology (生物技术) will make food better and healthier. Plants without insects or illnesses (病虫害) will be developed. The taste of fruit and vegetables will be better and food will be kept longer.
Many new ways to cure (治愈) illnesses will be found. People will use products of genetic engineering (基因产品) to cure more illnesses. However, some new illnesses will appear.
小题1:What will happen in the future according to the passage?
A.The air won’t be much cleaner.
B.Cars will run by itself without a driver.
C.It’ll be much more dangerous to drive a car.
D.There’ll be fewer accidents and less pollution (污染).
小题2:Where will new cities have to be built in the future?
A.In the sea.B.In the sky.
C.Underground.D.On the land.
小题3: What will be made better and healthier by biotechnology?
A.Medicine.B.Toys.
C.Food.D.Clothes.
小题4: Genetic engineering will help doctors to cure more________.
A.coldB.illnesses
C.cancerD.headache
小题5: Which is the best title (标题) of the passage?
A.Cars in the future.
B.Get ready for the future.
C.How to keep food longer?
D.Where will people live in the future?
查看习题详情和答案>>

Here is a page from a magazine called Future. Read the following information about things that may happen in ten years.

Cars will run on solar power (太阳能)and will be much cleaner. They will be much safer. For example, if you are too close to another car or if you are driving dangerously, your car will slow down or stop by itself.

New cities will have to be built in the seA.Some cities on water will have two levels (层). People will live on the upper level; the lower level will be used for traffic, shops and factories.

Biotechnology (生物技术)will make food better and healthier. Plants without insects or illnesses (病虫害)will be developed. The taste of fruit and vegetables will be better and food will be kept longer.

Many new ways to cure (治愈)illnesses will be found. People will use products of genetic engineering (基因产品)to cure more illnesses. However, some new illnesses will appear.

1. What will happen in the future according to the passage?

A.The air won’t be much cleaner.

B.Cars will run by itself without a driver.

C.It’ll be much more dangerous to drive a car.

D.There’ll be fewer accidents and less pollution (污染).

2. Where will new cities have to be built in the future?

   A.In the sea.                                           B.In the sky.

C.Underground.                                      D.On the land.

3. What will be made better and healthier by biotechnology?

   A.Medicine.                                            B.Toys.

C.Food.                                                 D.Clothes.

4. Genetic engineering will help doctors to cure more________.

   A.cold                                                   B.illnesses

C.cancer                                                D.headache

5. Which is the best title (标题)of the passage?

     A.Cars in the future.

      B.Get ready for the future.

      C.How to keep food longer?

      D.Where will people live in the future?

查看习题详情和答案>>
If we are driving a car or crossing a street, we will stop when the traffic lights turn red. Why do we use red rather than other colors?
As we know, scattering (散射) happens when light goes through the air. For the same media, if the wavelength (波长) is long, the scattering will be short. If the wavelength is short, then the scattering will be long.
Of all light we can see red has the longest wavelength, so the scattering is the weakest. That means the red light travels far. In fact, it travels farther on rainy days.
Using the red light can help drivers in farther areas see the lights. It helps drivers slow down or stop in time. If drivers don’t see the red light until they are close, they may not be able to stop the car in time. An accident may happen. Red can also excite people. We can act more quickly when we see the color red.
In a word, red light helps drivers stop in time and help prevent accidents.
【小题1】______ has the longest wavelength of all light we can see.
A.RedB.GreenC.YellowD.Black
【小题2】Red light travels farther on ______ days.
A.windyB.sunnyC.rainyD.cloudy
【小题3】Red can make people act more quickly because ____________.
A.red can make people happierB.the scattering of red is very short
C.the scattering of red is very longD.red can make people more excited
【小题4】The underlined word “prevent” means ______ in Chinese.
A.逃避B.防止C.处理D.检查
【小题5】The passage mainly tells us ____________.
A.why accidents happenB.how the red light travels
C.why we use red traffic lightsD.how to stop in time at traffic lights
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