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B Listen and circle
答案：
1.b 2.b 3.a 4.b
C Ask and answer
答案：
【解析】：题目考查一年级译林版上册Unit 4 "Is this a teddy?"的句型运用，要求根据图片进行问答。需先识别图片中的动物，再用"Is this a ...?"提问，并用"Yes./No. This is a ..."回答。
【答案】：1. —Is this a teddy? —Yes. This is a teddy.
2. —Is this a dog? —Yes. This is a dog.
3. —Is this a cat? —Yes. This is a cat.
4. —Is this a rabbit? —Yes. This is a rabbit.
【答案】：1. —Is this a teddy? —Yes. This is a teddy.
2. —Is this a dog? —Yes. This is a dog.
3. —Is this a cat? —Yes. This is a cat.
4. —Is this a rabbit? —Yes. This is a rabbit.
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