For many online shops, the price of their products can be decreased _______ 30% in the holiday seasons.

A. toB. ofC. byD. on

 

C

【解析】

試題分析：句意：對于許多網(wǎng)店來說，在假日他們產(chǎn)品的價格會減少30%。To為了；of屬于……的；by相差；on在……上，選C。

考點：考查詞義辨析

 

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