第一部分：阅读理解，（共两节，满分40分）
第一节（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
A
The Golden Gate Bridge in San Francisco，California is one of the world's most beautiful bridges. It is also one of the most visited places in the world. Vehicles(车辆)cross the bridge an average of 41 million times each year. More than 1800 hundred million vehicles have used the bridge since it opened more than 70 years ago.
