题目内容

Itisknownthatconsumptionofalitergasolinewillemit2.3kgCO2.Today,youdriveyourcarandconsume5litersofpetrol.HowmuchCO2haveyouemitted?

A. 9.5kg
B. 10.5kg
C. 11.5kg
D. 13.5kg

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