填空题
.Travel was not always as popular as it is today. In the past only
1 people could travel to other countries. But in
2 years, one person in ten visited a country far away from home. More people travel today because there is a
3 middle class in many parts of the world. People now have more money for travel. Special airplane fares for tourists make travel
4 and thus more attractive than ever before. One person does not travel for the same reason as another.
5 , most people enjoy seeing countries that are different from their own. They also like to meet new people and try new foods.