题目

根据反应3NO2 + H2O → 2HNO3 + X，推断X的化学式为（    ） A、N2                         B、NO                         C、N2O3                      D、N2O5 答案：B–Peter told me he wanted to come with us. Is that OK with you?--I don’t mind _________he pays for his meals.A. as far as     B. as long as         C. as well as         D as soon as