补全对话(每空l分。共5分)。
A . The bus ride takes about 6 hours
B. What about the hotels? C. Good idea.
D. We have two tours each week. E. What are you going to do?
F. Two days. G. That sounds good.
A: Is there anything I can do for you, sir?
B: I read in your travel guide (旅游指南) about the tour to Xi’an.
A: Yes.____小题1:____, leaving on Monday and Thursday mornings.
B: How long is the tour？
A: ___小题2:_____ And it costs 360 yuan.
B: Can you give me more information on the tour?
A: Sure. The bus leaves at nine, in front of our office. ____小题3:____, with two stops to see some places of interest.
B: ____小题4:____
A: You’ll be staying at California Hotel. It’s a three-star hotel. And the meals are free.
B: ____小题5:____ . We will talk about it and tell you whether we will go or not.
A: All right.
cP(g)＋dQ(g)达到平衡时，M的体积分数y(M)与反应条件的关系如图所示．其中z表示反应开始时N的物质的量与M的物质的量之比．下列说法正确的是( )