阅读下面短文，完成短文后面各题。
Do you like traveling (旅行)? How do you usually get to the place you want to visit? There are many
ways of traveling. For most people, maybe the most popular way is by train. You can see the beautiful
sights when you're sitting on the train.
In the old days, traveling by train was not fast. And there were no air conditioners (空调设备) on the
train. So some people didn't like taking trains. Today trains are much faster than before, and most trains
have air conditioners. Many years ago, it was not easy to have dinner on the train. But now there are
dining cars (餐车). You can eat the food you like on the way.
Taking trains is very interesting and comfortable (舒适的). Now more and more people like taking
trains. What will trains be like in 100 years' time? It's hard to say.
根据短文内容，判断下列句子的正、误，正确的用"A"，不正确的用"B"。
( ) 1. Many people like taking trains when they are traveling.
( ) 2. People didn't like taking trains in the old days because it was expensive.
( ) 3. All the trains have air conditioners today.
( ) 4. It's easy to buy food on the train today.
( ) 5. Today the train is a very popular way of transportation.