题型：翻译 题类：常考题 难易度：普通
仁爱科普版九年级上Unit 2 Saving the earth. Topic 2 All these problemsare very serious.同步练习
This a blanket around the earth.
This is because this king of radiation can .
During this period, we our planet a lot in many ways.
Forests deserts, so many kinds of animals and plants .
It causes of the oceans to rise and the climate of the earth .
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