阅读短文,选择正确的答案。
I am a student. I like reading a book.
Every week, I go to the Xinhua bookstore. Usually I go by bus, but sometimes I
go by bike. I know the traffic lights are the same in every country. Red means
stop. Yellow mean wait and green means go.
But some traffic rules are different in some countries. If you go by
bike, by bus or by car, you should remember the traffic rules.