◎ 题干
______nature reserves _______us learn more about protecting animals.
A.Studying ; help B.Studies ; helps C.To study; helping D.Studying; helps
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“______nature reserves _______us learn more about protecting animals.A.Studying ; helpB.Studies ; helpsC.To study; helpingD.Studying; helps…”主要考查了你对  【不定式】【分词】【动名词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。