21. What is the first paragraph mainly about?

　A. The origin of voluntourism. B. The future of voluntourism.

　C. The concept of voluntourism. D. The importance of voluntourism.

22. According to paragraph 3, which may inspire people to participate in voluntourism?

　A. Making money. B. Avoiding adventure.

　C. Applying for a scholarship. D. Seeking for a change.

23. What might be talked about after the last paragraph?

　A. Cases where people help others in their own community.

　B. Tips on choosing voluntourism organizations and projects.

　C. Reasons why not all people adopt a positive attitude to voluntourism.

　D. Problems caused by volunteers who lack necessary skills for their tasks.

　　　　　　　　　　　　　　　　　　　B

　　At the age of twenty-two, I was employed by one of the largest commercial companies in the world, so my work mainly focused on advertising, working on production teams for hundreds of television commercials. I was fortunate to experience such an amazing career at such a young age, working all over the country with some of the most creative people in the world. I had it all.

　　And then one day a sudden thought came through me like a lightning bolt. "This is an industry that uses anorexic (厌食的)models to sell diet food to teenage girls." My life changed.

　　And I quit.

　　A twelve-year career.

　　Right then.

　　That night I went home and was weak in my knees. I did not want to be part of the members causing this problem; I wanted to be part of the people who had solutions. But I had no idea what the solution looked like. My grandfather used to say, "Start with what you know, and more will be revealed".

　 I knew the film, television and advertising industries and almost everything about them.

　　So I started going into junior high schools. I held up pictures of the models to show what they looked like at five o'clock in the morning, and then held up some pictures showing what they looked like after three hours of professional makeup, thirty-five lighting technicians, and professional photographers who can make anyone look beautiful and sexy...not to mention the efforts of post-production, where they airbrush nearly all of the imperfection parts right out of the picture. With digital technology, they can even stretch the models to make them appear taller and thinner.

　　I talked to young girls and said, "This is a multi-billion dollar industry that spends millions of dollars a year proving to you that there is something wrong with you so that they can sell you something to fix it. So I am here to tell you that your teeth are white enough... and your breath is fresh enough... and your thighs are thin enough. You are enough."

You are enough, no matter what others say and what happens.

24. Why did the author quit working in the commercial company?

　A. He was fed up with his work in advertising industry.

　B. He realized his work was misleading teenage girls.

　C. He found it hard to work with the team.

　D. He decided to take up a career in education.

25. The author showed two sets of pictures of models to young girls to __________.

　A. show the magic power of make-up skills

　B. stress the great efforts models made in their work

　C. advocate developing digital technology

　D. expose the real truth behind the amazing beauty of models

26. What message does the writer mainly want to pass to teenage girls?

　A. You might as well change your life when an opportunity arises.