在氧化还原反应中,氧化剂被(),还原剂被(),它们达到的还原状态或氧化状态,除了决定它们本身的各自的()关系外,()的性质也有一定的影响。
参考答案:还原;氧化;强弱;介质
When class began, we stopped _______ . [ ]
A. talk
B. talking
C. to talk
D. talked
What ________ of Shanghai? [ ]
A. is the population
B. are population
C. are the population
D. is population