BÀI TẬP BỔ TRỢ VÀ NÂNG CAO - UNIT 8

Tham khảo tài liệu bài tập bổ trợ và nâng cao - unit 8, tài liệu phổ thông, ôn thi đh-cđ phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả
Nội dung trích xuất từ tài liệu:
BÀI TẬP BỔ TRỢ VÀ NÂNG CAO - UNIT 8 BÀI TẬP BỔ TRỢ VÀ NÂNG CAO - UNIT 8I. Fill in the blank with one suitable word Samuel Morse, the (1)… of the telegraph, was born in 1791 at Charlestown, in theUnited States of America. When he was a young man, he liked painting. He studied art inLondon. When he returned to America, he opened a (2)… in Boston and worked as aportrait painter. In 1829 Morse sailed (3)… Europe to study classic art in Italy. He was an artist andknew little about science. But at the age forty-one, far out in the Atlantic Ocean, his life(4)… the ship sailing from France to New York carried many passengers, among (5)…was Dr. Jackson. He told Morse that electricity could pass through any length of wire.Morse firmly believed that if electricity could be found in any part of a long wire, it couldbe used messages. Soon he began to work out a way to send messages. He wanted tomake an instrument that could send messages instantly to any (6)… of the world. Morsethought, if my message can go ten miles without stopping, I can make it go (7)… theworld”. He made hundreds of experiments but he had had little knowledge on electricityand couldn’t (8)… progress. Morse had idea of making a relay and using a number of such relays for sending weaksignals for a long (9)… So the first real telegraph was born. On May 24th, 1844 the first message ever sent over wires (10)… from Washington toBaltimore. Morse was not only the first to produce a practical telegraph, but he was a pioneer ofthe (11)… widely used electrical communication in the world today. Morse worked out his famous alphabet or code of dots and dashes. The sender tapsout the words in Morse code. Telegraph lines began to go up all over the world. Morse and his assistants did a gooddeal of work on the submarine cable (12)… that message could be telegraphed across theocean.II. Use the correct form of verbs:A. Laser light can be used for (transmit) power. Electrical power (transfer) to laser light.At the end of the distant beam, the reverse process takes place. Because fog or rain wouldinterfere with transmission on earth, lasers (must beam) though evacuated pipelines(prevent) power loss. These pipelines must be perfectly straight in order to accommodatethe arrow-like laser beam. Mirrors (require) to allow the beams (change) directions andgo around corners.B. It may be impossible (persuade) my mother (give) up her job even though she’shaving health problems. We can’t even get her (cut) down on her working hours. Sheenjoys (work) so much that she refuses (retire) and take it easy. I admire her for(dedicate) to her work, but I also want her to take care of her health.III. Use the correct form of words: Present giving Presents and present (1.give) should be fun. The whole idea of giving a present is thatyou should enjoy planning an especial p leasure and surprise for someone. The value of apresent is the (2.little) important thing about it. What matters is that a token of your loveand appreciation of the person. Those who never give anything away, not even(3.sympathetic), are sure to be (4.appoint) and (5.happy) people. An ideal present should be something one will like and want, not just something youlike. Everyone has simple tastes (6.expensive) to buy or easy to make. The (7.simplicity)present is often the most (8.appreciate). The most (9.success) present (10.give) I knowshop all the year round for presents. They see just the right present for a friend, buy itthen and there at once put it away till it is wanted. In this case, I suggest you keep a list ofsuitable presents for your friends so that when the time comes, you can go out to buysomething special.IV. Rewrite the sentences1. I’ll let you borrow the book but you must promise to return it next week If .....................................................................................................................2. Belgium is a far less mountainous country than Austria. Austria has.......................................................................................................3. It isn’t pleasant to be alone in a strange country, is it? It’s ...................................................................................................................4. You can’t say anything that would persuade me to live overseas Nothing ...........................................................................................................5. I’d do anything to prevent him from going there There’s ............................................................................................................6. All the people in France speak French There’s nobody................................................................................................V. Choose the best answer Compact disc ...