题目

听下面一段较长对话，回答以下小题。【1】What’s wrong with the boys?A.They lost a camera. B.They got sick. C.They wasted money.【2】What is the family probably going to do tomorrow?A.Go shopping. B.Go to a bank. C.Have a birthday party. 答案：【答案】【1】B【2】C【解析】【原文】W: Hello. Jean speaking.M: Oh, it’s you, dear. Sorry I had to rush off this morning. How are the boys?W: I’m taking them to the doctor at 10:00, but I’m sure they’re going to be all right.M: That’s good. What about you?W: Oh, I’m better now. Don’t worry. I’m going to make a birthday cake for tomorrow’s party. And I’ve bought a已知图一表示的是可逆反应 CO(g)+H2(g)C(s)+H2O(g)-Q（Q＞0）的化学反应速率（v）与时间（t）的关系，图二表示的是可逆反应2NO2(g)N2O4(g)+Q（Q＞0）的浓度（c）随时间 t 的变化情况，下列 说法中正确的是A.图一 t2 时刻改变的条件可能是升高了温度或增大了压强B.图一 t2 时刻改变的条件可能是通入了 CO 气体C.图二 t1 时刻改变的条件可能是升高了温度或增大了压强D.图二 t1 时刻改变的条件是增大压强，则混合气体的平均相对分子质量将减小