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题型：单选题 题类：常考题 难易度：普通
浙江省温州市2018-2019学年七年级上学期英语教学质量检测(一）（含听力音频）
—Yeah! It's great to watch movies in it.
—Oh, I am doing some _____ to better understand what is happening to our earth.
—See you!
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