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第1题

Which one of the following statements is NOT true according to the passage
·Recycling careduce water and air polluti
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第2题

All of the following are benefits of recycling EXCEPT _______
·preserving natural resources
·getting everyone in
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第3题

Recycling means _____________ .
·extracting useful materials from natural materials
·extracting useful materials f
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第4题

We drop a piece of metal into a jar full of water. The metal will float if it weighs less tha__________.
·aequal amou
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