A. The problems faced by local farmers. B. Her further research into heart disease
C. The failure of her career after graduation. D. The health state of people in her hometown.
9. Why does the author take the football team as an example? A. To advocate the concept of independence. B. To stress the importance of teamwork. C. To support the idea of co-op model. D. To explore the key to success.
10. What is Ayers-Elliott' s attitude towards the future of Foot Print Farms? A. Optimistic. C. Cautious.
11. What is the main idea of the text?
A. Naturally grown food benefits people’s health. B. Food Print Farms is making a difference in Mississippi. C. Ayers-Elliott encourages people to experience farm D. Agritourism is becoming increasingly popular in America. 【答案】8. D 9. C 10. A 11. B 【解析】
本文是一篇记叙文。主要讲述了艾尔斯﹣艾略特成立了足印农场，对密西西比河周边的人起了积极的作用。 【8题详解】
细节理解题。根据第二段最后两句 \many Mississippians were seriously unhealthy and it didn't take research to see that．And many of the state' s greatest health challenges could directly result from poor diet．\可知，让艾尔斯﹣艾略特成立了足印农场的原因是她家乡人们的健康状况。故选D。 【9题详解】
推理判断题。根据第三段 But the lessons they learned about the rewards of hard work and working together to accomplish something were even more valuable products of their
B. Skeptical. D. Ambiguous.
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efforts可知，作者举足球队为例是为了支持合作模式的想法。故选C。 【10题详解】
细节理解题。根据最后一段It' s a model that can easily be learned in other places and I' m looking forward to seeing some of our current partners do just that﹣﹣to take what they have learned here and spin it off in other communities可知，艾尔斯﹣艾略特对足迹农场未来的态度是乐观的。故选A。 【11题详解】
主旨大意题。阅读全文，根据最后一段第一句\in other places and I' m looking forward to seeing some of our current partners do just that﹣﹣to take what they have learned here and spin it off in other communities，\﹣Elliott remarks．艾尔斯﹣艾略 希望其他人也能够像他这样做。可知本文主要讲述了艾尔斯﹣艾略特成立了足印农场，对密西西比河周边的人起了积极的作用。故选B。
D
We can video chat with astronauts aboard the International Space Station and watch live footage from the frozen heights of Everest. But communicating with a submarine (潜艇）or a diver is not so easy. The lack of practical methods for sharing data between underwater and airborne devices has long been a frustration for scientists. The difficulty stems from the fact that radio signals work perfectly in air travel but poorly in water. Sonar (声呐）signals used by underwater sensors reflect off the surface of the water rather than reaching the air.
Now，researchers at MIT have developed a method with the potential to revolutionize underwater communication. “What we’ve shown is that it’s actually feasible to communicate from underwater to the air,\says Fadel Adib，a professor at MJT’ s Media Lab，who led the research.
The MIT researchers designed a system that uses an underwater machine to send sonar signals to the surface, making vibrations (震动)corresponding to the ls and Os of the data. A surface receiver then reads and decodes these tiny vibrations. The researchers call the system TARF. It has any number of potential real-world uses, Adib says. It could be used to find downed planes underwater by reading signals from
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sonar devices in a plane' s black box and it could allow submarines to communicate with the surface.
Right now the technology is low-resolution. The initial study was conducted in the MIT swimming pool at maximum depths of around 11 or 12 feet. The next steps for the researchers are to see if TARF is workable at much greater depths and under varying conditions—high waves, storms， schools of fish. They also want to see if they can make the technology work in the other direction— air to water.
If the technology proves successful in real-world conditions, expect “texting while diving” to be the latest underwater fashion. 12. What does the author mainly talk about in Paragraph 1? A. The future of video chat underwater and in air. B. The frustrations of developing underwater devices. C. The difficulty of communication from water to air.
D. The current situation of communicating with a submarine. 13. What does the underlined word “feasible” mean? A. Achievable. B. Convenient.
C. Changeable.
D. Alternative.
14. What do we know about TARF?
A. It is widely used to find downed planes. B. It can work well at great depths underwater. C. It is an underwater machine that sends signals. D. It can send，receive and read signals from underwater 15. What is the best title for the text? A. The Real-world Uses of Sonar Technology
B. Full Water-to-air Communication Closer to Reality C. A Breakthrough in the Application of Video Chat D. TARF Becoming a New Means of Communication 【答案】12. C 13. A 14. D 15. B 【解析】
.
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本文是一篇科普说明文，讲述的是水下与陆地上的通信在之前是无法实现的，随着科技的进步，这一通讯逐渐能够变为现实。 【12题详解】
细节理解题。根据第一段第二句But communicating with a submarine （潜艇）or a diver is not so easy．The lack of practical methods for sharing data between underwater and airborne devices has long been a frustration for scientists可知从水里向空气中传递信息，进行交流是很困难的。故选C。 【13题详解】
细节理解题。根据第二段第一句Now，researchers at MIT have developed a method with the potential to revolutionize underwater communication．可知研究人员已经研究出了一种方法让人们从水里与外界进行沟通，说明海底与外界的沟通实际上是可行的。所以该词的意思是\可行的、可实现的\。故选A。 【14题详解】
细节理解题。根据第二段\The MIT researchers designed a system that uses an underwater machine to send sonar signals to the surface， making vibrations （震动）corresponding to the ls and Os of the data\可知，它可以从水下发送、接收和读取信号。故选D。 【15题详解】
主旨大意题。根据第一段最后两句和第二段第一句The difficulty stems from the fact that radio signals work perfectly in air travel but poorly in water． Sonar （声呐）signals used by underwater sensors reflect off the surface of the water rather than reaching the air. Now，researchers at MIT have developed a method with the potential to revolutionize underwater communication．可知，本文讲述的是水下与陆地上的通信在以前是无法实现的，但随着科技的进步，这一通讯逐渐能够变为现实。故选B。
第二节（共5小题；每小题2分，满分10分）
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Apologizing the Right Way to a Friend
Why are apologies so difficult? Saying you are sorry can be one of the most difficult things you do. But we all make mistakes, so you'll probably have an occasion when you need to apologize.
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