取一滤纸条，等间距滴入10滴紫色石蕊溶液，装入玻璃管中，然后从玻璃管的两端同时放入分别蘸有浓氨水和浓盐酸的棉球，并迅速封闭两端管口，很快可观察到管内有白烟产生，待白烟消失后还可观察到如图所示的现象．

则下列说法中正确的是____

A．氨水和盐酸易挥发

B．图示黑点表示石蕊溶液变成了红色

C．氨水与盐酸没有发生化学反应

D．____（比较分子运动速率的快慢）

判断下列句子是否与短文相符，相符写正确，不相符写错误。

A

    Hello, I'm John. I have a room. It's big. I have a computer. I put it on my desk. I like playing football. There's a football under my desk. There is a big toy box beside my bed. In the toy box, there are three toy bears. I have a toy rabbit too. It's on my bed. I like soft toys. I like robots too. There are two robots on the shelf(书架). This is my room. I like my room.