阅读下列短文，从每题所给的四个选项(A. B.C和D)中，选出最佳选项。

　　阅读理解 A

　　China Import and Export Fair, also known as the Canton Fair, is held in Guangzhou

　　every spring and autumn. The Fair is a comprehensive one with the longest history, the

　　highest level, the largest scale, the most complete exhibit variety, the broadest distribution

　　of overseas buyers and the greatest business turnover in China.

　　Canton Fair attracts more than 24 000 China s best foreign trade companies with good

　　credibility and sound financial capabilities, and 500 0verseas companies to participate in

　　the Fair.

　　Canton Fair is a platform for Import and export mainly, with various and flexible

　　patterns of trade. Besides traditional way of negotiating against samples, the Fair holds

　　Canton Fair Online . Various types of business activities such as economic and technical

　　cooperation and exchanges, goods inspection, insurance, transportation, advertising and

　　consultation are also carried out in flexible ways. Business people from all over the world

　　are gathering in Guangzhou, exchanging business information and developing friendship.

　　Events Schedule of the 115th Session of Canton Fair

　　Time: May lst, 14:00-16:00

　　Place: No. 8 Meeting Room, B Floor, Area B

　　Event: Training Seminar of Overseas Marketing

　　Theme: Market Segmentation and Channel Building

　　Details: Cloris, Project Facilitator, Trade for Sustainable Development of International

　　Trade Centre (ITC)

　　Time: May 2nd, 14:00- 16:30

　　Place: No. 8 Meeting Room, B Floor, Area B

　　Event: Fashion and Trend Forum

　　Theme: The "must have" fashion trends for Meds and Womeds wear for Spring/Summer

　　Details: Michael Leow, Sales and Market Director of Fashion Snoops (Asia Pacific)

　　21. The Canton Fair is organized in Guangzhou _ .

　　A. every two years B. every season C. once a year D. twice a year

　　22. If you want to visit the clothing show, you can be there _ .

　　A. on May lst 14:00 - 18:00 B. on May 2nd 14:00 - 16:30

　　C. on May lst 8:00 - 16:30 D. on May 2nd 10:00 - 16:00

　　23. What is the main purpose of the text?

　　A. To introduce the Canton Fair.

　　B. To present overseas investment.

　　C. To report the trade achievements.

　　D. To attract the best foreign trade companies.

　　阅读理解 B

　　aktak tabulaba?

　　You probably don't know how to answer that question---unless you happen to be one

　　ofthe about 430 people in the world who speak a language called Matukar Panau. Then you

　　would know it means "What are we doing?" Matukar Panau is one of the world's rarest

　　languages. It is spoken in just two small coastal villages in Papua New Guinea.

　　Several years ago, David Hamson, a language expert, didn't know much about

　　Matukar Panau either. No one had ever recorded or even studied its words and rules. With

　　so few speakers, the language risked disappearing soon. It was endangered.

　　Hamson didn't want that to happen to Matukar Panau. So in 2009, he set out for Papua

　　New Guinea. His goal: use modern technology to help the remaining speakers preserve

　　their native tongue.

　　But Matukar Panau is far from the only language facing loss. Studies suggest that by

　　the end of this century, nearly half of the 7,000 languages now spoken worldwide could

　　disappear. They're in danger partly because the only people left speaking them are elderly

　　adults. When those individuals die, their language will die with them. In addition, children

　　may discard a native language and instead use more common global languages, such as

　　Chinese, English or Spanish.

　　In the United States alone, 134 native American languages are endangered. "language

　　hotspots" exist all over the world. These are places with endangered languages that haven't

　　been recorded. They include the state of Oklahoma, pockets of central and eastern Siberia,

　　parts of northern Australia and communities in South America.