Unit-3-Period-One-Warming-Up同步课时精讲精练

A device that can create water out of thin air even in dry environments has been ing only the power of the sun and a special material with some unusual properties(特性)，the device can produce 2.8 litres of water in 12 hours.And it can work in condition where humidity(湿度) is as low as 20 percent.Professor Omar Yaghi，a chemist at the University of California，Berkeley，who helped create the device，said，“We wanted to show that if you are cut off somewhere in the desert，you could survive because of this device.A person needs about a can (330ml) of water per day.That is something one can collect in less than an hour with this system.This is a major breakthrough in the long-standing challenge of getting water from the air at low humidity.”But，as well as saving people’s lives in a desert，the harvester could become a major part of everyday life，enabling people to have water without a connection to the public supply or a well.The device，described in a paper in the journal Science，uses a type of metal-organic framework，or MOF，which Professor Yaghi invented 20 years ago.So far，more than 20,000 different kinds of MOFs have been created each with different properties.Some can capture(俘获，夺得) carbon dioxide from chimneys，while others can separate out different types of oil.Professor Yaghi teamed up with Professor Evelyn Wang，an engineer at the Massachusetts Institute of Technology，to create the effective device with the help of colleagues.“This work provides a new way to harvest water from air that does not require high relative humidity conditions and is much more energy-efficient than other existing technologies，” Professor Wang said.阅读短文，判断正(T)误(F)1．The new device may save a person when he/she gets lost in the desert.(T)2．It was Professor Omar Yaghi that invented the device on his own.(F)Period One Warming Up & Reading—Pre-reading匹配左边的单词与右边的汉语意思[第一组]1．patent A．产品2．courtyard B．专利证书；专利权3．distinguish C．宽大的；仁慈的；慈悲的4．merciful D．院子；庭院；天井5．product E．显示……的差别；使……有所不同；辨别答案 1.B 2.D 3.E 4.C 5.A[第二组]6．stainless A．突然的；意外的7．abrupt B．小心；谨慎8．convenient C．无锈的；不锈的；没有污点的9．caution D．预料；期待；期望10．expectation E．便利的；方便的；就近的答案 6.C7.A8.E9.B10.D[第三组]11．passive A．愉快的；高兴的12．merry B．抓住；捉住；夺13．seize C．被动的；消极的；被动语态的14．criterion D．有效的；确凿的15．valid E．(评判的)标准；尺度答案11.C12.A13.B14.E15.DStep 1Fast-readingⅠ.What’s the main idea of the passage?A．How to trap the snakes without hurting them.B．How to apply for a patent.C．The writer’s new idea of trapping the snakes and her application for a patent. D．How to get a new idea and make it a patent.答案CⅡ.Match the main idea with each part.1．PartⅠ(Para.1)A．The discovery of the problem of the snakes.2．PartⅡ(Paras.2～3) B．The requirements of getting a patent.3．Part Ⅲ (Paras.4～6) C．The research on the approaches to solving the problem. 4．Part Ⅳ (Paras.7～8) D．The attempts to catch the snakes.答案 1.A 2.C 3.D 4.BStep 2Careful-readingⅠ.True (T) or False (F)1．The writer bought an ice-cream maker made of aluminum.(F)2．The snakes are too big for the writer to handle.(F)3．The snakes are poisonous.(T)4．The snakes are finally sent to the zoo.(F)5．People who produced a new type of plant have the qualification to get a patent.(F)6．A patent will be published 18 months from the date you apply.(F)Ⅱ.Choose the best answer according to the text.1．The writer caught the snake by .A．killing themB．removing their habitatC．attracting them into a trapD．cooling to make them sleepy答案D2．The biggest advantage of the writer’s new idea is that .A．it makes the snakes move quicklyB．it makes the snakes hardly bite usC．it is easier for us to kill the snakes without hurting ourselvesD．it is easier for us to catch the snakes without killing them答案D3．What instruments were used for catching the snakes?A．A bowl，ice-cubes，male perfume.B．A bowl，a bucket，female perfume.C．A small net，ice-cubes，a bucket.D．A small net，a bucket，powders.答案C4．Which statement is TRUE according to the text?A．The snakes were so sleepy in the second attempt that they couldn’t bite the writer at all. B．Your product must be different from everybody else’s if you want to receive a patent. C．The writer decided to send her invention to the patent office the moment she succeeded in catching the snakes.D．If an application for your product proves to be valid，you can get a patent immediately.答案B5．According to the text，which of the following do you think can be given a patent?A．A new star discovered by a scientist.B．A new novel written by Han Han.C．A new way to make dirty water clean.D．A new kind of grass found in a mountain which can be used as a medicine.答案CStep 3Post-readingAfter reading the passage，please fill in the following blanks.When the writer called up her mother in the countryside on the phone，she learned that snakes came near their house now and then and that the snakes seemed 1.to have made(make) their home there.The writer felt proud and considered 2.it a chance for her to distinguish herself by inventing something 3.merciful(mercy) that would catch snakes but not harm them.She set about 4.researching(research) the habits of snakes.5.Prepared(prepare) with some research findings，she decided 6.on/upon three possible approaches.At last，she decided to cool them so that they could be 7.easily(easy) caught.However，her first two attempts were not successful.As a result，she had to attempt a third time,8.which helped her fulfill her aim successfully.She collected the passive snakes and the next day she merrily released them all back into the wild.She was so 9.delighted(delight) that she determined to send her invention to the patent office to get 10.recognition(recognize) for her successful idea.Step 4Sentence-learning1．Here was a chance for me to distinguish myself by inventing something merciful that would catch snakes but not harm them.[句式分析]本句主干是倒装句式Here was a chance...。