A kind of little cars may some day take the place of today’s cars. If everyone drives such cars in the future,there will be less pollution in the car. There will also be more space for parking cars in cities,and the streets will be less crowded. Three such cars can fit in the space now needed for one car of the usual size.

The little cars will cost much less to own and to drive. Driving will be safer,too,as these little cars can go only 65 kilometers an hour. The cars of the future will be fine for getting around a city,but they will not be useful for long trips. Little cars will go 450 kilometers before needing to stop for more gasoline.

If big cars are still used along with the small ones,two sets of roads will be needed in the future. Some roads will be used for the big,fast cars and other roads will be needed for the slower,small ones.

1.There is much pollution in the car today because ________.

A.people drive big cars

B.people drive little cars

C.the cars go 65 kilometers an hour

D.the cars can go 450 kilometers an hour

2.The usual size of cars today is ________that of future cars.

A.much smaller than B.much the same as

C.three times as large as D.a little larger than

3.We can learn from the passage that________.

A.big cars cost less to own and to drive

B.big cars are not useful for long trips

C.the cars of the future will be much smaller than today’s cars

D.small cars are faster than big ones

4.The street will be less crowded because ________.

A.there will be fewer cars in the future

B.there will be fewer passengers in the street

C.driving future cars will be safe

D.future cars will be much smaller

5.Two sets of roads may be needed in the future because ________.

A.there will be too many cars in the future

B.more and more people will get around a city

C.big cars and little cars may be used along with each other

D.it looks more beautiful to have two sets of roads

China is running ahead in 5G . In March, 2019, the Shanghai Hongqiao Railway Station became world's first "5G railway station". Now, it takes only 20 seconds to download a long movie there.

We are moving closer and closer to the 5G world. However, the new technology is still strange to most of us. What is 5G, after all? At first, 5G is fast. 5G will be much faster than today's 4G networks!

The first 5G modem(猫,调制解调器)of the IT company Qualcomm supports speeds of up to 5 Gigabytes(千兆字节)per second. Most of us have never experienced anything close to that speed. And we are only talking about the first generation(一代)of 5G modems, Future models are likely to be even faster.

But 5G is not all about speed. Have you ever been to a large event where your data (数据)connection slowed down? That is because 4G networks can only support a certain number of devices(设置) per square meter. 5G networks will be able to do much better. They can support up to a million devices(设置) per square kilometer.

Now, you begin to understand why 5G is a huge change over 4G. The technology is not Just for the smartphones. It has a strong influence(影响) on every connected device. With 5G, self-driving cars will be able to communicate with the world around them as quickly as possible. Wearables, Pcs and smart home devices will be able to improve as well.

Are you looking forward to that 5G world now?

1.Each of the following is mentioned about 5G EXCEPT

A.the first place where 5G is used in the world

B.the speed of using 5G to download

C.the country that runs ahead in 5G

D.the way of 5G spreading

2.Paragraph 4 shows the advantages of 5G by_________

A.using different advice

B.comparing 5G with 4G

C.some data of 5G networks

D.the condition of different areas

3.How many fields of using 5G does the passage tell us?

A.Three. B.Four C.Five D.Six.

4.From the passage, which of the following is WRONG?

A.5G technology is closer and closer to us.

B.5G self-driving cars will be cheaper than any other cars.

C.IT company Qualcomm produced the first generation of 5G modems,

D.5G networks can support up to a million devices every square kilometer.

5.What's the best title for the passage?

A.What's 5G? B.How is 5G used?

C.Is 5G good or bad? D.How's the future life?

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