【C】

　　Once a boy who wanted to fly covered his arms with feathers. He used wax to keep the feathers on. But he flew too close to the sun. The wax melted. The feathers came off. Down came the boy!
　　This is just a story. But it tells us that man has always dreamed of flying. In 1783, this dream came true. Two French brothers invented the hot-air balloon. It rose a thousand feet high.
　　It took almost 100 years for men to move from the hot-air balloon to the first airship. It was invented in the late 1900s. It was a powered balloon.
　　In North Carolina of America, less than twenty-five years later, the Wright Brothers flew the first airplane. This first flight, in 1903, lasted less than half a minute. It covered just a few feet.
　　根据短文内容，选择能回答所提问题的最佳答案。
　　11. Why did the boy come down from the sky? Because ________.
　　A. he covered his arms with feathers
　　B. he used wax to keep the feathers on
　　C. he flew too close to the sun
　　D. the wax melted and the feathers came off
　　12. Who invented the hot-air balloon?
　　A. Two French brothers. B. the Wright Brothers.
　　C. Benjamin Franklin. D. Einstein.
　　13.When was the first airship invented?
　　A. In the late 1900s. B. About 100 years ago.
　　C. A and B. D. Many years ago.
　　14. How about the first airplane?
　　A. The Wright Brothers invented the first airplane.
　　B. It flew less than half a minute and a few feet high.
　　C. This first flight was in 1903.
　　D. It was born in North Carolina of America.

【答案与解析】

　　1. D。根据E-books are electronic books. They are no larger than an ordinary book, with a screen on which you can read 可知答案为D。
　　2. A。根据First, you call up websites on your computer and select books that you want可知答案为A。
　　3. B。根据You can download about 10 books at a time(你每次大约能下载10本书)就能确定答案。
　　4. A。根据First of all, e-books save space. You can put as many as 10books into a thing no bigger than a pocket radio and then carry it everywhere(首先，电子书节省空间，你能放10本书进入比口袋收音机大不多的一件东西里，且可携带到任何地方去)可确定答案。
　　5. C。根据With the development of e-book technology, probably an e-library will appear(随着电子书技术的发展，电子图书馆就会应运而生)就能确定答案。
　　6. Russian, chance。根据Eager to open up a space tourism market, a Russian company presented a “space place” model. It would give tourists the chance to spend an hour in space(人类渴望开发太空旅游市场, 一家俄罗斯公司提出一项“太空住所” 样式，将给旅游者提供1小时在太空潇洒的机会)足能敲定要填的词(from www.zkenglish.com)。
　　7. eager, flying。根据Anybody who can pay about $100,000 would be able to experience zero gravity. About 100 people have already booked seats to fly on the C-21 plane (任何能负担得起大约10万美元的人都能体验飞行时之失重状态，约有100人已经预定了飞向太空的C-21 型飞机的座位)足能敲定要填的词。
　　8. space tourist。根据The US company helped the first space tourist, Dennis Tito, to secure his flight to the International Space Station. Tito is said to have paid $20 million for the eight-day trip(美国公司帮助第一位太空旅行者丹尼斯·提托安全飞行到太空站上，据提托说他付了两千万美元旅行了8天)足能敲定要填的词。
　　9. pilot, passengers。根据The aircraft, carrying a pilot and two passengers, will be positioned on top of a carrier airplane until it is 17,100 metres in the air(载一个飞行员和两名乘客的太空船安放在一架航空母舰上，一直飞行到17,100米的高度)足能敲定要填的词。
　　10. slide, land。根据Then C-21 will slide back into the atmosphere and land like an ordinary plane(然后C-21就滑回到大气层中，像一架普通飞机着陆到地面上)足能敲定要填的词。
　　11. D。根据 Once a boy who wanted to fly covered his arms with feathers. He used wax to keep the feathers on. But he flew too close to the sun. The wax melted. The feathers came off (从前, 一个胳膊上绑着羽毛的男孩想飞向蓝天。他用蜡把羽毛粘在胳膊上，由于飞得离太阳太近，蜡融化了，羽毛脱落了) 显然, 选项A和选项B都不是原因，选项C是原因，选项D才是最佳答案。
　　12. A。根据 Two French brothers invented the hot-air balloon(两个法国兄弟发明了热气球)就能确定选项。
　　13. C。根据 It took almost 100 years for men to move from the hot-air balloon to the first airship. It was invented in the late 1900s可知答案选C。
　　14. B。根据This first flight, in 1903, lasted less than half a minute. It covered just a few feet(1903年诞生了第一架飞机，飞行不到半分钟，仅飞了几英尺高)可知答案选B。