is no doubt that using energy efficiently reduces the release of greenhouse gases.A It B

发布时间：2020-08-16 19:36:04

     is no doubt that using energy efficiently reduces the release of greenhouse gases.
A It        B This       C That     D There

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解析：考查句型：there is no doubt that毫无疑问做某事。句意：毫无疑问有效地使用能源会减少温室气体的释放。故选D。
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