All his attention was ______ on one thing only—how to solve the problem of water shortage.

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问题 All his attention was ______ on one thing only—how to solve the problem of water shortage.

选项 A、emphasized
B、delivered
C、paid
D、focused

答案D

解析 空白后的介词on决定应选focus“(使)聚焦于某点,集中”,因为我们通常说focusone’s attention/efforts/thoughts on…“集中注意力(努力,思想)于……”;而pay at—tention to…“注意……”,所以应排除C;emphasize“强调;加强……的语气”;如,He emphasized the importance of careful driving.“他强调小心驾驶的重要性。”此词不能与attention连用;deliver“传送,交付;发表,表达”,如,How often are lettersdelivered here?“这里一天投递几次信件?”He delivered his speech effectively.“他的演讲做得生动有力。”
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