In my opinion standards of workmanship have ______ over the past 20 years.A、aggr

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问题 In my opinion standards of workmanship have ______ over the past 20 years.

选项 A、aggravated
B、diminished
C、deteriorated
D、eroded

答案 C

解析 deteriorated意为“使恶化，使退化”，合乎题意。全句意为：在我看来，在过去的20年里，工艺标准已退化了。aggravate意为“加重(病情、负担等)”；diminish意为“减少”；erode意为“腐蚀、侵蚀”。

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