A、Vanilla. B、Chocolate or syrup. C、Food. D、Nuts, fruit and whipped cream. D信息提示题。短文中第二段指出These can be nuts，fruit, and whipped cr

The ice-cream sundae is an original American dish. Ice cream is not an original American food and chocolate syrup is not an original American food. But an American put the two together and started the ice-cream sundae.
   An ice-cream sundae is ice cream with chocolate or other syrup over it. There are many kinds of toppings today. You put the toppings on top of the syrup. These can be nuts, fruit, and whipped cream.
   Ice-cream sundaes started in the 1890s. At that time people went to ice-cream parlors to eat ice cream. One day in Wisconsin a customer went to an ice-cream parlor. He wanted chocolate syrup on his vanilla ice cream. The owner of the parlor said this was a bad idea. But the customer insisted and finally got what he wanted. Soon many customers wanted syrup on their ice cream. Other ice-cream parlors started to have this new ice-cream dish.
   The sundae got its name from an ice-cream parlor in another town in Wisconsin. Here the owner of an ice-cream parlor only served the unusual ice-cream dish on Sundays. The ice-cream with the syrup was a special order and it was more expensive. It was a Sunday special. That is how it got the name sundae. Nobody knows why the spelling changed from Sunday to sundae.
   Questions 16 to 18 are based on the passage you have just heard.
   16. What makes up sundae toppings?
   17. When did the ice-cream sundae start?
   18. What did the name "Sundae" come from?