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科目:初中英語 來源: 題型:
explore, mark , find out, system, use, direction, man-made
Thanks lo the Global Positioning1 (GPS) , we can exactly know where we are now. It can be2 in any place and any weather condition to find their position by 3 . In the past,they had to use the stars in the sky as 4 to tell them where they were. However,this melhod didn't work very well when the weather was bad. So the GPS is like a 5 "star".it is a great invention that can
help us to better explore our planet.
1._______ 2. 3. 4._____________ 5.
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科目:初中英語 來源: 題型:
3. 1will lock the door when you leave.
The door________ _______ _______ when you leave.
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