阅读下面短文，从每小题A、B、C、D四个选项中，选出能回答所提问题的最佳答案。

A

    Maps are pictures of places. You must have seen a map of the world, of your home country and even of your home city. They show us towns, cities, roads, parks, schools, hospitals, and more.

There are also many other types( 类型) of maps. Each gives a special kind of information. There are street maps, tourist maps, and even maps of the air and sea.

    Here is a simple road map.