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Unit 1 Hello!A Listen and judge录音文字稿：1. Good afternoon. 2. Hi. 3. Good morning. 4. Hello.参考答案：B Listen and number录音文字稿：1. Good morning, Bobby. 2. Good afternoon, Sam.3. —Hello, Bobby.—Hello, Sam.参考答案：a. 3 b. 2 c. 1C Look and respond参考答案：1. Good morning. 2. Hi./Hello. 3. Hello./Hi. 4. Good a  |
