13.【2020 •南通市】They offered courses_________ students know the importance of protecting the Huanghe R

13.【2020 •南通市】They offered courses_________ students know the importance of protecting the Huanghe River.
A. help B. helped C. helps D. to help
答案】D
解析】句意:他们开设课程来帮助学生了解保护黄河的重要性。考查非谓语动词。help是动词原形;helped是过去式;helps第三人称单数形式;to help是动词不定式。结合句意,他们开设课程,是为了帮助学生了解保护黄河的重要性,表示目的,用动词不定式作目的状语,故选D。
14.【2020 •盐城市】The Birdwatching Society goes to Zhalong Nature Reserve        the birds every year.
A. to count B. counting C. count D. counts
答案】A
解析】句意:观鸟协会每年都去扎龙自然保护区统计鸟类数量。考查非谓语动词。to count动词不定式形式;counting动名词或现在分词形式;count数数,计算总数,动词原形;counts是动词的第三人称单数形式。根据句子结构可知,该空在句中作目的状语,表示“去扎龙自然保护区”的目的,应用动词不定式。故选A。
 
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