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They use specially trained dogs to _____ their sheep at night.

A．take careB．get along withC．watch overD．turn to

C

解析試題分析：動詞短語辨析。A當心；B與…相處；C看守，監(jiān)視；D轉向，向…求助；句意：在晚上他們使用特別訓練的狗來看守他們的羊群。根據(jù)句意說明C正確。
考點：考查動詞短語辨析
點評：動詞的短語辨析要根據(jù)上下文的語境進行，要把短語的意思和句意相結合。同時也要注意一個短語多種意義的現(xiàn)象，如pick up 撿起；用車接；無意中學會；接受信號；康復。恢復；染上…；在平時的學習中要把同種類型的短語放在一起比較，如同一個動詞+不同的介詞/副詞；同一個介詞/副詞+不同的動詞。諸如此類的固定短語，屬于最基本的知識，如果學生有錯誤，則應該加強背誦并平時多解題，進而加以鞏固.

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