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Recycling is?a 7??the right thing to do for another reason. The earth is?r?8?in?natural materials like water and trees,?b 9??these materials are not endless. We use up our natural materials much faster than the earth is able to reproduce them. For example, each year we cut down??more that 6,000 square miles of forest. But it?t 10??about 25 years for a new tree to grow.
Recycling can help us save the earth, so let’s take action right now.Complete the exercises.当堂检测1 minuteHomeworkSay:
learn more ways to help protect the environment???
三、教学反思
教学反思?
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