1、According to the first graph, it can be seen that ______________, it can also be concluded from it that ______________.
2、There is an interesting and instructive picture which goes like this: ______________.
3、Nowadays there is a growing concern over ______________. Many people like ______________, while others are inclined to ______________.
4、Nowadays, it is common to ______________. Many people like ______________ because ______________. Besides, ______________.
5、 ______________, just like many other t
