题目

It is _______ impossible to find a good educational computer program in this part of the city. A．hardly       B．merely      C．nearly       D．ever 答案：C11．向0.15mol Cu粉与Fe粉的混合物中加入一定量的稀硫酸产生气体XL，然后加入一定量的稀硝酸，充分反应后固体全部溶解，收集到NO气体Y L，（气体体积均已换算到标准状况）．则X+Y的数值可能是（　　）A．1.12B．2.24C．2.8D．4.48