题目

有力地证明了大气压强存在的著名实验是                 实验。 答案： 马德堡半球   阅读理解。                                                     A Solar-powered Plane-Lowcarbon     Earlier this month, a solar-powered (太阳能动力的) plane called Lowcarbon took off to the sky for the first time. It has passed an important test on the way to travel around the world.     Lowcarbon took off from an airport in Switzerland (瑞士) at 45 km an hour. It slowly rose into the sky.    "There has never been an airplane so big, so light, using so little energy," said Bertrand Piccard, a leaderof the project.     During the 90-minute flight, Lowcarbon did several turns. It climbs nearly 1.6 km above the countryside.     Engineers plan to test a night flight in July. Then they will use the results of the tests to build a second plane. They plan to travel around the world in that plane in 2012. "We want to fly it day and night with nofuel," Piccard said.     Piccard and pilot Andre Borschberg will take Lowcarbon around the world. They will make a few stopsto change places and rest after a long time in the air-and to show off their aircraft.     Lowcarbon flies at 70 kph on average (平均). That is faster than a bike and slower than a car. The pilots will keep it in the air for up to five days at a time.                                           We Are One-"Expo Through My Eyes"     Sharing offers you more happiness. To celebrate the 2010 Shanghai World Expo, China Daily invites you to share what you've seen, heard and experienced at the 6-month international event or Expo-related stories in English. Whether you are an Expo volunteer, a reporter, or a tourist, we'd like you to share with us your Expo experience, as seen through your eyes. So if you would liketo contribute (投稿), please join us today insharing the joy!     Topic: 2010 Shanghai World Expo     Language: English only     Length: No more than 1,000 words    Content: Stories with photos are necessary.    Duration: May 1,2010-October 31,2010    Email-box: expo@chinadaily.com.cn     Reward: In addition to the satisfaction of supporting our work,                  -your stories will be published on China Daily's website;                  -you will go in a lucky draw for a prize. 1. Which of the following information about the plane Lowcarbon is NOT true? [     ] A. It can fly at 70 km an hour. B. It is solar -powered. C. It has passed a night-flight test. D. It is slower than a car. 2. Lowcarbon is a special plane because ______. [     ] A. it's made in Switzerlland B. it has travelled around the world C. it can do turns in the sky D. it's big and light, but uses little enegy 3. The purpose of the second article is to ______. [     ] A. encourage us to visit Shanghai Expo B. ask us to be volunteers for Shanghai ExpoC. invite us to write stories about Shanghai Expo D. tell us to get the lucky prize of Shanghai Expo 4. Your stories about the 2010 Shanghai Expo for China Daily ______. [     ] A. can be in Chinese B. don't need to have photosC. must be given by post D. should be handed in by e-mail