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       第3部分：概括大意与完成句子(第23——30题，每题1分，共8分)

　　下面的短文后有2项测试任务：(1)第23——26题要求从所给的6个选项中为第2——5 段每段选择1个最佳标题;(2)第27——30题要求从所给的6个选项中为每个句子确定1个最佳选项。

　　Feed the World with Potatoes

　　1. As food prices continue to rise rapidly,there is growing concern about the effect it will have among the world’s poor.

　　2. Increasingly, experts are looking to thepotato as a possible low-cost solution to feeding the hungry. To emphasize the issue, the United Nations has called the potato “a hidden treasure” and named 2008 the International Year of the Potato. Here’s how potatoes could end the food crisis.

　　3. The potato matures more quickly, on less land and in harsher climate than most other major crops. Up to 85 percent of the plant is eatable, compared with around 50 percent of cereals. Its broad adaptability to a wide variety of farming systems is also note worthy.

　　4. Potatoes are an excellent source of complex carbohydrates, which is release their energy slowly, and have only 5 percent of wheat’ s fat content. They contain only a quarter of the calories of bread and,according to the Potato Center, when boiled, potatoes have more protein and nearly twice the calcium as corn. Additionally, they are good source of vitamin C, iron, potassium(钾)and zinc(锌).

　　5. The food and Agriculture Organization recently surveyed food price inflation in over 70 of the poor countries. Cereal price inflation was much higher and far more widespread than for potatoes. A significant factor behind the potato’ s affordability is the fact that unlike other agriculture products, the potato is not yet a global commodity, and has therefore not attracted speculative investors. Raw potatoes are heavy and carrot during transmit, so global trade has been show to take off. Also, potatoes are susceptible(易受影响的) to infection with disease, hindering(阻碍) export. According to analysts’ estimates, less than 5 percent of potatoes are traded internationally, with prices driven primarily by local tastes instead of international demand.

　　23. Paragraph 2__B___

　　24. Paragraph 3__D___

　　25. Paragraph 4__C___

　　26. Paragraph 5__A___

　　A. Potatoes’ Lower Inflation

　　B. Major Food Crops

　　C. Healthy Food

　　D. Higher Output

　　E. Growing Importance of Potatoes

　　F. High Price

　　27. The potato is cheap because E

　　28. The whole world is concerned about food prices because B

　　29. Many peopleeat potatoes because C

　　30. The potato isnot yet a global commodity because F

　　A. it has remained a controversial issue

　　B. they are rising rapidly

　　C. they are very nourishing

　　D. nobody eats it

　　E. its yield is high

　　F. raw potatoes can decay easily during transit

小编：二月