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Do you love traveling？If the answer is yes，then have you ever thought about why？You may maintain that traveling can help you expand your scope of knowledge，especially geographical and historical learning．It will provide more chances for you to enjoy food and try on clothes that you otherwise cannot possible have．A famous English author Francis Bacon （1561-1626）makes a point when he says that，"Travel，in the younger sort，is a part of education； in the elder，a part of experience．"
Evidence of leisure travel can be traced as far back as ancient Babylon．This year，according to the World Travel & Tourism Council，the 1billionth tourist will cross an international boundary before the end of this month．That means that one in seven people on the planet traveled this year，something that would not have been possible a few decades ago．Around 20years ago only the rich could travel．
While the US and France remain the two largest destinations for world travel，experts say much of the explosive growth in tourism has been to countries like Guatemala，the Dominican Republic，and the Ivory Coast，which weren't even on the world tourism map a decade ago．The top five destinations in the world，according to the United Nations World Tourism Organization，are Paris，London，New York，the Mediterranean，Turkey．
Several factors have led to the boom in world travel．The prosperity （富裕） of people in Asia is one factor．People in Asian developing countries have lifted their incomes above middle-class levels in the past few years．And a lot of them have used their new wealth to travel．In addition，travel costs have been reduced thanks to the rapid development of transportation，and competition between airlines to give customers the best prices．
| Topic | Travelling |
Advantages | ●Enrich knowledge，especially in（71） ______ and history．
●Taste different（72） ______ and buy different clothes．
●Francis Bacon thinks that travel is a part of education and a part of experience． |
Development | ●（73） ______ from ancient Babylon，travel only really took off after World War II．
●Only the wealthy people could go on a trip about two（74） ______ ago．
●The number of people travelling abroad will（75） ______ as many as 1 billion before the end of this month． |
Tourist（76） ______ | ●The US and France remain the two most popular countries for world travel．
●Tourism has developed（77） ______ in countries like Guatemala，the Dominican Republic，and the Ivory Coast．
●The top five destinations in the world are Paris，London，New York，the Mediterranean and Turkey． |
| Factors（78） ______ in the popularity of global tourism | ●Asian people have get （79） ______ than before．
●People have（80） ______ less money on travel because of convenient transportation and price competition between airlines． |