阅读对话,根据对话内容选择正确的选项。
Sarah: Li Ming, what are you doing on the Internet? Playing games or chatting with friend?
Li Ming: Neither(都不). I'm trying to buy three train tickets. (票)
Sarah: Where are you going?
Li Ming: I'm going back to my hometown, Sichuan. You know, it's going to be Chinese New Year next month.
Sarah: Why won't you buy the tickets next month? It's still early.
Li Ming: It is not early! Many people are going to buy tickets to go back home at the festival, but there are not so many tickets. T should buy as early as possible (尽可能).
Sarah: Really?
Li Ming: Before the festival, China's roads, train stations and airports will be full of people. Last year, about 3, 000, 000, 000 trips were made across the country.
Sarah: So many people!
Li Ming: Yes. This is called "chunyun" in China. Some people say chunyun is the largest (最大的) annual "human migration (人类迁徙)"in the world.
Sarah: They're right. I think you'd better buy the tickets quickly.