【题目】

Many people have to do their own things every day. Some of them ride bikes and some of them drive cars, so streets look very busy.

This is a street crossing. There are red and green lights at each corner Drivers must watch the lights carefully. when there is a green light the cars may go on. When there is a red light, the cars must stop. They must wait until the light changes to green. Then they can go. Sometimes the cars 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.

But some people are colour-blinded. They can't tell the difference between red and green .These people must not drive. We must keep streets safe.

1The streets look busy because________.

A.there are so many people and cars or bikesB.the streets are not wide enough

C.many people like travellingD.the streets are fewer than before

2Drivers must see________clearly at a corner of the street crossing.

A.the people and bikesB.the old and young people

C.the green light and the red lightD.the students who are going to school

3Cars can’t go________.

A.when the green light showsB.when the red light shows

C.when there is no lightD.when the light changes

4A car can turn right when________.

A.there is a green or red lightB.there is only a green light

C.there is only a red lightD.there is no way

5If someone is colour-blind, he________.

A.can drive carsB.can see the green colour clearly

C.can’t go to streetsD.can’t be a driver

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