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A. on a farm B. at a school C. in a restaurant D. in an office in a city 57. Alan usually spent his holiday . A. by the seaside B. in the country C. in the mountains D. on an island 58. Alan decided to spend his holiday at Willow Farm because . A. he lived near there B. he had a good friend there C. he thought it would make a change from sitting by the seaside D. he wanted to enjoy the fresh air in the country 59. How many days did he stay on the farm ? A. A few days . B. A week . C. Three days . D. Four days . 60. What made Alan return so soon ? A. He fell ill . B. The air there was not fresh . C. The prices were too high . D. He was afraid that they would have the dead man for dinner . B Passport Control(护照检查处) If you are arriving at London Heathrow Airport and are not transferring to another flight outside Britain or Northern Ireland，you must pass through the Passport Control and the Customs(海关) immediately after leaving your plane . If you are not from Britain or a citizen of the European Community(欧共体)，you must fill out a special form before your passport is examined . This form is called a landing card and should be given to you during the flight to London. After landing，follow the ARRIVALS signs . Make sure you are in the right channel when you reach the Passport Control . There is one channel for holders of European Community Passports，and a second channel marked “Other Passports”. Baggage Reclaim Area (取行李处) After passing through the Passport Control，follow the signs to the Baggage Reclaim Area . If you have luggage which is carried in the aircraft hold，it will be delivered to you in the Baggage Reclaim Area . Look for the sign with your flight number . If you have only hand luggage，go directly through the Baggage Reclaim Area to the Customs. Customs(海关) All passengers must pass the Customs after the Passport Control . There is a choice of two channels: Green and Red . If you have nothing to declare，go through the Green Channel . If you are not sure about your Duty Free Allowance(免税限额) or if you have something to declare，go through the Red Channel . Information about Duty Free Allowance can be found on special notice boards in the Baggage Reclaim Area . You should study this information carefully whether you are going through the Red Channel or not . Please note that if you go through the Green Channel，you may be stopped and asked to open your luggage for inspection. 61.All passengers arriving at Heathrow Airport that are not transferring to another flight outside Britain or Northern Ireland ________. A.must go through either the Passport Control or the Customs B.must go through the Customs，but not the Passport Control C.must go through the Passport Control and the Customs D.don’t have to be examined 62.The underlined word “transferring” means ________. A.exchangingB.changing C.replacingD.turning 63.At London Heathrow Airport when reaching the Passport Control，________. A.all passengers go through the same channel B.passengers of the European Community and those from other countries go through different channels C.British people and passengers from other countries go through different channels D.all European passengers go through the same channel 64.If you have only hand luggage，________. A.you may go through the Baggage Reclaim Area to the Customs B.you should only go through the Baggage Reclaim Area C.it isn’t necessary for you to go through the Baggage Reclaim Area D.it isn’t necessary for you to do anything 65.If you have Duty Free goods，________. A.you don’t have to go through the Green Channel B.you may go through the Green Channel C.you must go through the Red Channel D.you should go through both Green and Red Channels C A huge cloud of dust rose and an overpass disappeared . This was the scene in Zhuzhou ，Hunan Province on May 17.Nine people were killed and 16 injured. Things were similar last year in the Sichuan earthquake . Thousands of people were buried in the ruins and lost their lives . What if we could have warned them? People are always racking their brains to find a way of preventing buildings’ collapse . Better materials and technology help，but they are not a solution. Just like humans，a building has its own life cycle from “birth” to “death”.If we know when a building is going to collapse，we can repair it in advance or get out of it before it falls. Now，scientists at the University of Illinois have developed a material that turns red before it breaks . The invention could be used in things like climbing ropes or bridge supports. The research was led by Nancy Sottos ，a professor at the university’s Beckman Institute，and Douglas Davis，a graduate research assistant. The secret behind the colorchanging material is a type of molecule (分子).A molecule is a group of atoms held together by chemical bonds . Imagine you and your friends standing in a circle，holding hands . Each person stands for one atom，your hands represent the bonds，and the entire circle represents a molecule . If one person lets go of his or her hands，the molecule changes color. The research team put the molecule into a soft material . When the researchers stretched the material，it turned bright red for a few seconds before it broke into two pieces . When they repeatedly stretched and relaxed the material，without breaking it，it only turned a little red. The major problem is that light can get rid of the red color . When the team shone bright light on the molecule，the broken bond was fixed，and the color disappeared. (责任编辑：admin) |