e-commerce worries some merchants, it contributes to the development of delivery industries.

A. WhenB. UnlessC. WhileD. Until

 

【解析】選C。考查狀語(yǔ)從句。句意: 盡管電子商務(wù)使很多商人擔(dān)心, 但是它卻促進(jìn)了快遞業(yè)的發(fā)展。while此處意為“盡管”, 引導(dǎo)讓步狀語(yǔ)從句, 一般放在句首。

 

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