15. D。　 细节判断题。根据文章最后一段，该种器械对于缺乏电源的偏远地区的人或者对于需要电源的士兵来说是很有用处的。选项A表达绝对话了；选项B还没有达到改变人们的生活方式那么大；选项C表达不符合原文，该种装置还没有用于实际生活中。故答案选D。

　D

New fast food debuts in U.S. fairs—fired Coke

A new fast food is making its debut(首次演出) at U.S. fairs this fall----fried Coke. Abel Gonzales, 36, a computer analyst from Dallas, tried about 15 different varieties before coming up with his perfect recipe----a batter mix made with Coca-Cola syrup, a drizzle of strawberry syrup, and some strawberries.

Balls of the batter are then deep-fried, ending up like ping-pang ball sized doughnuts(面团)which are then served in a cup, topped with Coca-Cola syrup, whipped cream, cinnamon(桂皮)sugar and a cherry on the top.

“It tastes great,” said Sue Gooding, a spokeswoman for the State Fair of Texas where Gonzales’ fried Coke made its debut this fall. “It was a huge success.”

Gonzales ran two stands at the State Fair of Texas and sold up to 35,000 fried Cokes over 24 days for 4.50 dollars each –and won a prize for coming up with “most creative” new fair food.

Ray Crockett, a spokesman for Coca-Cola Co., said: “we’re constantly amazed at the creative ways folks find to enjoy their Coke and make it part of celebrations like fairs and festivals. This is one is definitely different!”

14. A。　 细节理解题。文章第四段提到，这种装置不需要携带者超出一般的步行量，而通过检测氧气摄入和二氧化碳的呼出来说明该种装置是否能让携带者用起来方便不吃力。本题间接考查形容词 (strenuous)，不过从文章的上下文来看，该词应该与发电量和所吃食物无关。故答案选A。

13. D。　 推理判断题。根据文章第二段和第三段，这种装置主要是通过关节的活动来提供动能而发电，因此，膝关节的伸缩度直接关系到发电量的多少。故答案选D。

12. A。　 细节理解题。根据文章第二段和第三段，该种装置应该是安装在膝关节处的。故但选A。

11. B。　 主旨大意题。本文提到的这种新器械主要是通过人步行时膝关节的活动来带动该装置发电。选项B概述了该文的主旨；选项A、C和D偏离本文主题。故答案选B。

15. We can learn from the text that the device ______.

　 A. is a must for a soldier in the army

　 B. will more and more change people’s ways of life

　 C. has widely been used in remote areas

　 D. is more useful in places with electricity unaccessible

[解题导语]本文说的是一种通过人步行时膝关节的活动来带动该装置发电的新器械。

[答案与解析]

14. Why did the researchers measure the volunteers’ carbon-dioxide output?

　 A. To see whether the device is hard to use.

　 B. To test the amount of electricity generated.

　 C. To tell whether the device has enough source of energy.

　 D. To judge what food is useful for the wearers.

13. It can be inferred from the text that the amount of electricity from the device directly lies in ______.　

　 A. the speed of your walking　 　　　　　　 B. the amount of food you eat

　 C. the amount of oxygen intake　　　　　　 D. the extent of your knees extending

12. According to the text, which parts of the body are suitable for the device?

　 A. The knees.　 　　 B. The ankles.　　　　 C. The wrists.　　　　 D. The neck.

11. The text is mainly about a new machine that ______.

　 A. can make your walking easy on a treadmill

　 B. can generate enough electricity by walking

　 C. can increase the strength of your walking

　 D. can offer electricity for your physical practice