1.重点单词：unbelievable，progress，rapid，unusual，toilet，encourage，social，peaceful，performance，perfect，itself，collect
2．重点句式：
They have information about different computers and who invented them.
It's unbelievable that technology has progressed in such a rapid way.
I wonder how much more computers will be able to do in the future.
The museum teaches people about the history and development of toilets.
It also encourages governments and social groups to think about ways to improve toilets in the future.
The tea art performances show how to make a perfect cup of tea.
Watching the tea preparation is just as enjoyable as drinking the tea itself.
