句型转换。
1. The glasses are used for seeing in the dark. (对画线部分提问)
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2. Chelsea Lanmon invented the heated ice cream scoop. (对画线部分提问)
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3. Chelsea Lanmon invented the heated ice cream scoop. (改为被动语态)
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4. The telephone was invented in 1876. (对画线部分提问)
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