A. There will probably be no school on Mars.
B. It might take us two or three days to get to Mars.
C. There is a problem for us to live on Mars.
D. Food will not be the same.
E. First, people will have more space.
Many people believe that, by the year 2100, we will live on the planet Mars(火星). Here is what life could be like.
First of all, transport should be much better. By 2100, spaceship can travel at half the speed of light.  【小题1】 
Secondly, humans need food, water and air to live. Scientists should be able to find plants that can grow on Mars. These plants will provide us with food and air.
 【小题2】  We could easily jump too high and fly slowly away into space. To prevent this, humans on Mars have to wear special shoes to make themselves heavier.
Life on Mars will be better in many ways.  【小题3】  It is possible to live in a large building with many bedrooms. Then, robot will do most of the work, so we have more time for hobbies.
 【小题4】 Every student can study, do their homework on the computer and take exams in online schools. Each student will also have their own online teacher called “e-teacher”.
However, in some ways, life on Mars may not be better than that on the earth today.  【小题5】Meals will probably be in the shape of pills(药片) and will not be as delicious as they are today. Also, space travel will make many people feel ill.

 (A)There was ice on the road, and the doctor’s car hit a tree and turned over three times.To his surrise,he wasn’t hurt.He got out of the car and walked to the nearest house.he wanted to telephone the garage for help.AA woman,one of his patients,opened the door.”Oh,doctor,”she said,”I have only just telephoned you.You must have a very fast car.You hae got here very quickly,there was a very bad accident on the road outside.I saw it through the window.I’m sure the driver will need your help.”

判断正误（写T或F）

(  )1.The doctor was driving t the garage before the accident.

(  )2.A tree fell across te road,so the traffic accident happened.

(  )3.The doctor knew one of his patients lived in the nearest house.

(  )4. The patient phoned the doctor because she thought someone needed help.

(  )5. The woman wanted the doctor,but was surprised that he came so quickly.

(B) This is a street crossing. There are red and green lights at each corner. Drivers must watch he lights carefully.When there is a green light, the cars may go. When there is a red light, the cars must stop. Drivers must wait until the red light changes to green. Then they can go. Sometimes drivers want to make a right turn or a left turn. They can make a right turn when the light is green or red. But they must wait until the green light is shining if they want to turn left.Some people are colour-blind. They can’t see the difference between red and green. These people must not drive, or else there will be accidents. We must keep our streets safe.

(  )6.Drivers must watch __carefully at each corner.

(   )7.When there is a red light, ___________.

A.           the cars must stop                   B. the cars may go

C. the cars may make a left turn           D. the cars can’t stop

(  )8. The cars can make a left turn when _______________.

A.           There is a red light           B. There is a green light

C. There is a red or green light         D. There is a yellow light

(  )9.The colour-blind people must not drive because____________.

they are blind    B. they can’t tell the difference between red and green.

A.           C.they can’t hear anything       D. they can’t see the lights.

(  )10.According to the passage, we can know ____________.

A.              where there is a street crossing, there are traffic lights

B. the colour-blind people caused(引起) all the traffic accidents

C.if drivers always watch the traffic lights carefully, there will be fewer accidents

D. people who wear glasses cannot drive cars.