题目

You __________________, Don't talk on the mobile phone. A . will drive B . are driving C . driving D . drives 答案：B根据下面提供的装置图回答问题：（1）甲仪器的名称是______．（2）实验室用KMnO4制氧气的化学方程式为______ K2MnO4+MnO2+O2↑