题目内容：

What will the city of the future be like? No one knows for sure，and making predictions is a risky business. But one thing is certain about the future city—they are going to get bigger before they get smaller. Here are some of the ideas for running a city of 50,000 people in the year 2025.

1. To get rid of garbage problems, the city will load huge spaceships with waste materials and send them towards the sun，preventing landfill and environmental problems.

2. No smoking will be allowed within a future city's limits.

3. In the future all shopping will be done online, and catalogues will have voice commands to place orders.

4. Everyone will be given a telephone number at birth that will never change no matter where they live.

5. All forms of recreation,_such as cinemas, bowling, concerts and others, will be provided free of charge by the city.

6. All cars will be powered by electricity, solar energy or wind, and it will be possible to change the color of cars at the flick of a switch.

7. Distance surgery will become common as doctors carry out operations from thousands of miles away, with each city having its own telesurgery outpatient clinic.

8. Old people and people with disabilities will be able togo anywhere in the world using high－tech cameras attached to their heads.

9. Traveling in space by ordinary citizens will be common. Each city will have its own spaceport.

1.From the passage, we can infer that now___.

A. some waste materials are got rid of by filling holes in the ground with them

B. a patient can have an operation but doesn't have to stay in hospital

C. you must go out of the city if you want to smoke

D. no cars are powered by solar energy or wind

2.The underlined word “recreation” in the fifth idea probably means“___”．

A. risky business

B. what people will create again

C. taking one's career once again

D. activities for pleasure and amusement

3.Which is the best title for the eighth idea?___

A. Senior citizens    B. Holidays at home

C. The disabled    D. Space travel