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题型：单选题 题类：常考题 难易度：普通
牛津版（深圳·广州）初中英语七年级下册Module2 Man's best friends Unit 4 Save the trees 第1课时Reading（1）
—It is our duty to protect the Earth.
—Window of the World.
—Not now. I have to continue to clean the floor.
—I'm busy with the robot programmes. I have already entered the Maker Club.
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