The heating system has recently been ______ to make it more efficient.

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问题 The heating system has recently been ______ to make it more efficient.

选项 A、modified
B、amended
C、altered
D、changed

答案A

解析 近义词辨析。modify意为“修改.更改,改进”,常指通过局部的改动或轻微的修改、更正,而使整体能提供特定的目的之用,如:These plans must be modified if they are to be used successfully.(这些计划若要成功实施就必须进行修改。)amend意为“改正,修正,修订”,通过增加、删减或重新措词来修改规则、法律、文件、议案等,如:amend a document(修改一个文件);alter意为“改变”,指部分的、表面的改变,改变后基本上为原物、原状,特点不变,如:These clothes are too large;they must be altered.(这些衣服太大,得修改。)change意为“改变,更换”,普通用语,几乎可以指任何变化,常用来指根本的或完全的变化,如: The appearance of the town is quite changed.(这个城镇的外观变化颇大,)
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