根据对话情景, 在横线上填入适当的单词补全对话。

A: Mary, what do you ____ of your new school?

B: I like it very much. But there are too ____ rules.

A: What are the rules?

B: First, girls can't have long hair.

A: What? That's really an ____ rule.

B: Interesting? I think it's awful.

A: Do you have to cut your hair?

B: Yes, I do.

A: What ____ rules does your school have?

B: We can't ____ sunglasses. I can't stand (容忍)that. Sunglasses are my favorite.

A: That's a terrible rule.

（2015•广州）如图，将充满CO₂的试管倒扣在滴有紫色石蕊的蒸馏水中，一段时间后，下列实验现象描述正确的是（　　）

①试管内液面上升 ②试管内溶液变红

③试管内液面不上升 ④试管内溶液变蓝 ⑤试管内溶液不变色．