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题目内容
（西安科技大学-大学英语2）
【单选题】
In winter, some people energy by lowing the heat at night.
A、
preserve
B、
reserve
C、
deserve
D、
conserve
In winter, some people energy by lowing the heat at night.
A、
preserve
B、
reserve
C、
deserve
D、
conserve
参考答案