According to the passage，the modem methods are understood by_________

单选题According to the passage，the modem methods are understood by____________．

1阅读材料，回答题。

In the first paragraph．the writer recalls some things that happened between him and his friends．He____________．

2In the second paragraph，the writer talks about someone sayin9，“You are．a lucky dog．”He is saying that____________．

3This passage tries to tell you how to____________．