【題目】_______ nature reserves _______ us learn more about protecting animals.

A. Studying; helps B. Studies; to help

C. Study; helping D. Studying; help

【答案】A

【解析】句意：研究自然保護(hù)區(qū)有助于我們更多地了解保護(hù)動(dòng)物。動(dòng)詞短語(yǔ)或動(dòng)詞做主語(yǔ)時(shí)，用動(dòng)名詞，謂語(yǔ)動(dòng)詞用單數(shù)形式；結(jié)合句意和語(yǔ)境可知選A。

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