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题型：单选题 题类：常考题 难易度：容易
人教版小学英语三年级下册Unit 1 Welcome back to school! 单元检测（含小段音频）
—A dentist.
—They're black.
—At 7:30.
—They are Lingling's.
—Jack.
— Fine. It is shining.
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