He writes on both sides of the sheet to______paper.

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问题 He writes on both sides of the sheet to______paper.

选项 A、preserve
B、conserve
C、reserve
D、protect

答案B

解析 动词辨析题。preserve意为“保护;维持;保养;防止食物腐败”,重在强调使不受破坏;conserve意为“保存,保藏,保护”,强调节约;reserve意为“保留;储备;订座位,预定”;protect意为“保护,防护”。根据句意,答案为B。
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