听力原文：

There are many different signs in public. They tell you what to do or what not to do in a place. For example, if you go to see a film, you should enter the cinema at the ENTRANCE and leave through the EXIT. You will also find NO SMOKING signs in many cinemas. If you visit a museum, do not take any photos inside the halls. You are not allowed to. You will find NO PHOTOS signs in many museums. When you drive your car, don’t park in a street with a NO PARKING sign. Make sure to understand the signs and you won’t get into any trouble.

答案：5. B