题目

如图所示，水平地面G点两侧粗糙程度不同，物体一直受到沿水平方向5N的拉力F。物体经过E点开始计时，每经过相同时间，用虚线框记录物体的位置，物体在EG段做匀速直线运动，则( ) A . 物体在EF段的速度大于GH段的速度 B . 物体在GK段受到的摩擦力等于5N C . 拉力F在EF段所做的功大于在GH段所做的功 D . 拉力F在EF段的功率小于在GK段的功率The traditional tent cities at festivals such as Glastonbury may never be the same again. In a victory of green business that is certain to appeal to environmentally-aware music-lovers, a design student is to receive financial support to produce eco-friendly tents made of cardboard that can be recycled after the bands and the crowds have gone home. Major festivals such as Glastonbury throw away some 10,000 abandoned tents at the end of events each year. For his final year project at the University of the West of England, James Dunlop came up with a material that can be recycled. And to cope with the British summer, the cardboard has been made waterproof. Taking inspiration from a Japanese architect, who has used cardboard to make big buildings including churches, Mr. Dunlop used cardboard material for his tents, which he called Myhabs. The design won an award at the annual New Designers Exhibition after Mr. Dunlop graduated from his product design degree and he decided to try to turn it into a business To raise money for the idea, he toured the city’s private companies which fund new business and found a supporter in the finance group Mint. He introduced his idea to four of Mint’s directors and won their support. Mint has committed around ??500,000 to MyHabs and taken a share of 30 per cent in Mr. Dunlop’s business. The first Myhabs should be tested at festivals this summer, before being marketed fully next year. Mr. Dunlop said that the design, which accommodates two people, could have other uses, such as for disaster relief and housing for the London Olympics. For music events, the cardboard houses will be ordered online and put up at the sites by the Myhabs team before the festival-goers arrive and removed by the company afterwards. They can be personalized and the company will offer reductions on the expense if people agree to sell exterior (外部的) advertising space.  The biggest festivals attract tens of thousands of participants, with Glastonbury having some 150,000 each year. Altogether there are around 100 annual music festivals where people camp in the UK. The events are becoming increasingly environmentally conscious. 11. “Eco-friendly tents” in paragraph 1 refer to tents _______.   A. economically desirable  B. favorable to the environment   C. for holding music performances1   D. designed for disaster relief 12. Mr. Dunlop established his business        .   A. independently with an interest-free loan from Mint   B. with the approval of the City’s administration   C. in partnership with a finance group   D. with the help of a Japanese architect 13. It is implied in the passage that _______.   A. the weather in the UK is changeable in summer    B. most performances at British festivals are given in the open air   C. the cardboard tents produced by Mr. Dunlop can be user-tailored D. cardboard tents can be easily put up and removed by users. 14. The passage is mainly concerned with        . A. an attempt at developing recyclable tents B. some efforts at making full use of cardboards C. an unusual success of a graduation project D. the effects of using cardboard tents on music festivals 15. Which of the following would be the best title for the text? A. Don’t Use Tents Again B. The Advantages of Tents C. How to Produce Tents D. The Development of Recyclable Tents