1. 阅读对话，判断正误。

Waiter: Hello, can I help you?

Li Ming: Yes, I would like two hamburgers.

Waiter: Beef hamburgers or chicken hamburgers?

Li Ming: Beef hamburgers. How much are they?

Waiter: Thirty-five yuan.

Li Ming: OK. Thank you.

Waiter: You are welcome.

1. （1） Li Ming wants to eat chicken hamburgers.
3. （2） Two beef hamburgers cost seventy yuan.
5. （3） There are two kinds of hamburgers in the supermarket.
7. （4） Li Ming is very polite.