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

题目简介

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

A．to

B．of

C．by

D．on

题型：单选题难度：偏易来源：不详

试题分析：句意：对于许多网店来说，在假日他们产品的价格会减少30%。To为了；of属于……的；by相差；on在……上，选C。