Read the following paragraphs, without using a dictionary. After each paragraph, choose the sentence that best expresses the main idea.

D.For people who want a valuable experience abroad, there are exciting se opportunities to study and volunteer-at the same time. Are you interested in the arts or in learning about another culture? At the Vijnana Kala Vedi Cultural Center in India, you can study two subjects from a list of possibilities including Indian music, dance, theater, cooking, or yoga. The tuition for these classes and room and board is very low because you volunteer one hour each day to teach English to children in the village. Are you interested in science?Through an organization called Earthwatch, you study a specific science in a hands-on experience as you volunteer on a research project. The projects change from year to year, but among typical possibilities are digging up dinosaur bones in Montana, U.S.A., building solar ovens in Indonesia, or studying medical plants in Kenya, bees in razil, or the ecology of Lake Baikan, Silberia. It may surprise some people that so many are willing to pay over $1,000 and agree to work hard, usually for two weeks. The Earthwatch director of Public Affairs says that there are two main reasons: "One- it's a really exciting vacation. And two - they can try out potential career." "

What is the main idea of Paragraph D?  

• A. There are exciting opportunities for people who want to study and volunteer abroad.
• B. Scientists in several field need volunteers to help them.
• C. It's possible to learn about Indian culture while volunteering in a village school.
• D. Vollunteering can offer a rich experience for people who can't afford tuition for classes.
• E. Earthwatch volunteers have to pay for the opportunity to volunteer.

E . Volunteering is a good way to experience' another country without paying 70 for expensive hotels or tuition. But how can a person get to another country cheaply? One possibility is courier t ravel. For a low fee ($35-$50), a personcan join an association that sends information about monthly courieropportunities. The passenger agrees to become a courier (i.e., carry materials for a business in his or her luggage) and can then receive hugediscounts on airfare-for example, $250 from Los Angeles to Hong Konground trip or $400 from London to Tokyo round trip. Peoplewho enjoy oceantravel but don't have money for a cruise' ship might try a freighter. Althoughfreighters carry cargo from country to country, most also carry eight to twelve passengers. For people who want to take their time, it's a relaxing way to travel and is less expensive than taking a crowded cruise ship.

What is the main idea of Paragraph E? 

• A. Volunteering is a good way to experience anotheer country
• B. Courier fights and freighters are two ways to get to another country cheaply
• C. On a courier fight, a passenger carries something in exchange for cheap airfare.
• D. A trip on a freighter is both cheap and relaxing
• E. It's possible to travel cheaply.

F. Travelers who return from a vacation often answer the question "How was your trip?" by saying, "Oh, it was out of this world!" By this idiom, they mean, of course, that their trip was amazing 'or wonderful. However, people will soon be able to use this expression literally, but it will be expensive. Already, it's possible to go through the same training that astronauts go through. Just go to Star City, Russia. In addition to astronaut training, it's possible to experience one of their "Space Adventures." On one of these, for example, you can enter a special plane that gives you the feeling of weightlessness that astronauts experience- several minutes of zero-gravity. (Gravity is the force that keeps us on the Earth.) Two private individuals have already spent a week at the International Space Station, at a price of $20,000,000 each. A number of companies are now planning projects to commercialize space in various ways. A California company, Scaled Composites, and a British company, Virgin Galactica, are working on the creation of reusable vehicles that could carry passengers in the near future. Even the Hilton Hotel chain is considering building a space hotel. The main attractions will be the view (of Earth), the feeling of weightlessness, and the chance to take a hike ... on the Moon. It goes without saying that the price will also be "out of this world."

What is the main idea of Paragraph F?  

• A. People who want to go through astronaut training need to go to Russia.
• B. People pay a lot of money to experience weightlessness, or zero-gravity.
• C. Soon, it will be possible to take a flight to a space hotel.
• D. There are three main attractions, not available on Earth, which people can experience at a space hotel.
• E. Trips into space will soon be possible-but expensive.