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. When there is a red light, the cars must
stop. They must wait until the red light changes to green. Then they can go on.
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(闪烁)if they want to turn left.
Some
people are color-blind(色盲). They can not tell the
difference(不同)between the red and green lights. These people
must not drive, or there will be accidents. We must keep our streets safe.
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(1)
Drivers must watch ________ carefully at each corner.
A . green lights
B . red lights
C . both green lights and red lights.
D . yellow lights
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(2)
When there is a red light ________.
A . the cars must stop
B . the cars may go on
C . the cars may make a left turn
D . the cars may make a right turn
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(3)
Cars can make a right turn when ________.
A . there is a red light
B . there is a green light
C . there is a red or green light
D . there are no cars
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(4)
Color-blind people may have accidents because ________.
A . they can't drive
B . they can't see the lights
C . they can't see cars
D . they can't tell the difference between the red and green lights
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(5)
According to(根据)the passage ________ must not drive.
A . young people
B . old men
C . blind
D . color-blind people
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