综合短文填空，选择正确单词填入相应的空格.

    People never travel as often as today in China. In the past, few people could travel on ____ to other countries. But today more and more Chinese people travel ____they now are becoming richer and have enough money for travel. The special plane for tourists ____ travel____ expensive than ever before. Most people enjoy ____ countries that are different from ____own. They also like to meet people and eat new food. Tourism causes many____  in Chinese people’s lives. People build new hotels and ____some people____ interesting places to ____ . Now Tourism is a big business.

①1.25×3.69×2.5  

②32.4÷2.5÷0.4 

③21.3×5.34﹣1.3×5.34．