1. (2022高二下·四川月考) 听下面一段对话，回答问题。

1. （1） What are the speakers doing?

   A . Buying some stamps. B . Sending a birthday card. C . Paying some bills.
3. （2） What can we know about the machine?

   A . It cannot show words on the screen. B . It can exchange money. C . It cannot wait too long.
5. （3） What can we infer from the conversation?

   A . The woman has no money on her. B . The machine is new to the woman. C . The man has put some money in the machine.