As steel plants have become more ______, maintenance and adjustments of equipment have become a large share of the cost of runni

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问题 As steel plants have become more ______, maintenance and adjustments of equipment have become a large share of the cost of running the plants.

选项 A、allied
B、drafted
C、automated
D、duplicated

答案C

解析 形容词辨义。allied意为“联合的,同盟的”,如:the Allied invasion of southern Italy(盟军对意大利南部的入侵);draft是动词,意为“起草”,如:draft a speech(拟一份演讲稿),其过去分词不作形容词用; automated意为“自动化的”,如:automated teaching(自动化教学);duplicated意为“复写出的”,不用于比较级结构。由后半部分可推知,之所以仪器维修和调整占用了企业运行所需的大部分开销,就是因为这种自动化程度更高了,所以应选C)。
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