用完整的句子回答下列问题。

1. Can you play the violin?

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2. Do you like English or maths? Why?

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3. What sports do you like?

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4. When did you start to learn English?

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5. What are you going to do this summer vacation?

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“早穿棉祆午穿纱，抱着火炉吃西瓜”中的西瓜指是新疆的哈密瓜，哈密瓜高甜度的主要原因足（）。

A．新疆的水甜

B．新疆地区日照时间长，昼夜温差大，雨水少

C．新疆气候温暖宜人

D．哈密瓜新品种