This is green food. It is _____ for our health.
[     ]
A. harmless
B. bad
C. harm
D. harmful
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科目：初中英語(yǔ) 來(lái)源：同步題 題型：閱讀理解

閱讀下面短文，請(qǐng)從方框中選出適當(dāng)?shù)木渥犹钊胛闹械倪m當(dāng)位置，使短文內(nèi)容完整正確。

       This is a street crossing.  1   Drivers must watch the lights carefully.
          2    When there is a red light, the cars going straight must stop. They must wait until the red light
changes to green.  3   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.
         4   They can't see the difference between red and green. These people must not drive, or else there will be accidents.  5   
We must keep our streets safe.
There are red and gree,n lights at each corner.
Then they can go on.
When there is a green light, the cars may go on.
Some people are color-blind(色盲).

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