阅读理解。 We can not live a modern life without traveling. The fastest way of traveling is by air. With a plane one can travel in one day to places which it took a month or more to get to a hundred years ago. Traveling by train is slower than by plane, but one can see the country he is traveling through. Modern trains have comfortable seats and dinning-cars. They make even the longest journey enjoyable. Some people prefer to travel by sea when possible. There are large luxury liners (客轮) or river boats. They are not as fast as trains or planes, but traveling by sea is a very pleasant way to spend a holiday. Many people like to travel by car. They can make their own timetable. They can travel hundreds of miles a day, just as their wish. They can stop wherever they want to see something interesting or to enjoy a good meal at a good restaurant, or to spend the night at a hotel. That is why people choose traveling by car for pleasant trips, while they usually take trains or planes for business. 1. According to the passage, the fastest way of traveling is _______. A. by car B. by train C. by plane D. by sea 2. If we travel by car, we can _______. A. enjoy the longest journey B. travel only fifty miles a day C. make our own timetable D. travel to a very far place in a few minutes. 3. When people travel on business, they usually take _______. A. a boat or a train B. a car or a train C. a plane or a car D. a train or a plane 4. _______ have comfortable seats and dinning-cars. A. Cars B. Modern trains C. Planes D. Buses 5. If possible, people like traveling by sea because _______. A. it is as fast as trains and planes B. it is a pleasant way to spend a holiday C. it is very cheap D. it can stop wherever they like