In short， without information， a manager can only make blindly（）. 

Havingbeenworkinginlogisticsfor3years，heismorethan（）heusedtobe.

A.proud
B.brave
C.confident

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Thepriceofcommodities（）onmanyfactorslikequality，demand，supply，etc.

A.is basing
B.has based
C.is based

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