题目

You want to have fun and adventure and so you decide to travel somewhere to do it. Sounds like a simple enough thing. And basically it is. But what is adventure? That is the key here and the answer can be different for different people.     For those who love sports, adventure travel can have a whole different meaning than for those who like history. The physical travel types that you can find include such adventure travel as white water rafting (白浪漂流), kayaking or climbing and hiking to some mountains somewhere. To the hiker, backpacking across Ireland might be their adventmg铜和足量的浓硫酸反应,标准状况下生成SO2nL,则被还原的硫酸是（　） A．mol　　　　   B．mol　　　　   C．g　　　　    D．g