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1、Book 3 Unit 4綜合訓(xùn)練I .閱讀理解We can have video chat with astronauts aboard the International Space Station and watch live footage from the frozen heights of a mountain. But communicating with a submarine (潛艇)or a diver is not so easy. The lack of practical methods for sharing data between underwater airb
2、orne (空氣傳播的)devices has long been a frustration for scientists. The difficulty stems from the fact that radio signals work perfectly in air travel but poorly in water. Sonar signals used by underwater sensors reflect off the surface of water rather than reaching the air.Now, researchers at MIT have
3、developed a method with the potential to revolutionize underwater communication. What weve shown is that its actually feasible to communicate from underwater to the air, “ says Fadel Adib, a professor at MITs Media Lab, who led the research.The MIT researchers designed a system that uses an underwat
4、er machine to send sonar signals to the surface, making vibrations (震動(dòng))corresponding to the Is and Os of the data. A surface receiver then reads and decodes these tiny vibrations. The researchers call the system TARF. It has any number of potential real-world uses, Adib says. It could be used to fin
5、d downed planes underwater by reading signals from sonar devices in a plane,s black box and it could allow submarines to communicate with the surface.Right now the technology is low-resolution. The initial study was conducted in the MIT swimming pool at maximum depths of around 11 or 12 feet. The ne
6、xt steps for the researchers are to see if TARF is workable at much greater depths and under varying conditions high waves, storms, schools of fish. They also want to see if they can make the technology work in the other direction air to water. If the technology proves successful in real-world condi
7、tions, expect “texting while diving” to be the latest underwater fashion.語(yǔ)篇解讀:本文是一篇說明文。文章主要介紹了一項(xiàng)麻省理工學(xué)院的科學(xué)家發(fā)明的從 水下與地面上的人進(jìn)行通信的技術(shù)。What does the author mainly talk about in Paragraph 1?The future of video chat underwater and in air.The frustrations of developing underwater devices.The difficulty of comm
8、unication from water to air.The current situation of communicating with a submarine.解析:選C 段落大意題。通讀第一段的內(nèi)容可知,該段主要講的是從水下與地面上 的人進(jìn)行通信非常困難,因此C項(xiàng)正確。What does the underlined word feasible mean?A. Achievable.B. Convenient.C. Changeable.D. Alternative.解析:選 A 詞義猜測(cè)題。根據(jù)第二段第一句“Now, researchers at MIT have develope
9、d . underwater communication”可知,麻省理工學(xué)院的研究人員發(fā)明了 一種可能改 變水下通信的方法,使從水下與地面上的人進(jìn)行溝通成為可能,故畫線詞與A項(xiàng)“可實(shí)現(xiàn) 的”意思最相近,故選A。What do we know about TARF?It is widely used to find downed planes.It can work well at great depths underwater.C It is an underwater machine that sends signals.D. It can send, receive and read si
10、gnals from underwater.解析:選D 推理判斷題。第三段詳細(xì)講述了 TARF系統(tǒng)的工作原理:該系統(tǒng)使用一 個(gè)水下機(jī)器向水面發(fā)送聲納信號(hào),使震動(dòng)與數(shù)據(jù)的1和0對(duì)應(yīng),然后水面接收器讀取并對(duì) 這些微小的震動(dòng)進(jìn)行重新編碼,這樣可以從水下與地面上的人進(jìn)行通信。因此D項(xiàng)正確。What is the best title for the text?The Real-world Uses of Sonar TechnologyFull Water-to-air Communication Closer to RealityA Breakthrough in the Application o
11、f Video ChatTARF Becoming a New Means of Communication解析:選B 標(biāo)題歸納題。閱讀全文可知,本文主要介紹了科學(xué)家發(fā)明的一種解決從 水下與地面上的人無法進(jìn)行通信聯(lián)系這個(gè)難題的系統(tǒng),研究人員將會(huì)把它投入到真實(shí)的狀 況下進(jìn)行驗(yàn)證,因此B項(xiàng)最適合作本文標(biāo)題。II .閱讀七選五Little Etiquette (禮儀)Rules for Flying on an AirplaneBeing a polite passenger starts with just a few easy steps.Help your fellow traveler1 ,
12、 offer to lift a fellow passenger,s up there, too. Not only is it kind, but it could make the boarding process more efficient for everyone else.Keep your personal things, well, personalif s important to be mindful of your personal belongings. 2 , as you walk down the aisles (過道),by keeping it in fro
13、nt of you and close to your body. And once you sit down, you should stay there, and make sure you have everything you will need for the flight once you settle in your seat. Reaching over other passengers to access the overhead storage during the flight is uncomfortable for everyone.3In the narrow sp
14、ace of an airplane, maintaining your personal space will go a long way towards making a smoother ride for everyone. Let the middle-seat passenger use the armrests (its the least you can do), and keep your legs within the width of the chair frame.Be willing to swap seats with a familyAirlines sometim
15、es reserve certain seats for special passengers or charge extra fees for adjacent (田比連的)ones, making it tough for family members to buy seats together. 4_, offer to switch seats so that a family can sit beside each other; its a kind gesture that they won,t forget. 5 9 as switching seats while everyo
16、ne is boarding can be an inconvenience for those standing in the walkways.If you,re traveling aloneB If they avoid eye contactAvoid bringing smelly foodRespect your (limited) spaceAvoid hitting other passengers with your bagWhile you,re loading your carry-on bag into the overhead spaceBut be sure to
17、 delay swapping until the plane has reached the safe altitude語(yǔ)篇解讀:本文是一篇說明文。文章主要介紹了在飛機(jī)上做一個(gè)文明乘客的幾個(gè)簡(jiǎn)單 的方法。.選 F 根據(jù)空后面的“offer to lift a fellow passenger* s up there, too”中的 there, too 可知,當(dāng)你把隨身行李放進(jìn)頭頂上方的行李架時(shí),你也可以主動(dòng)提出幫同行的乘客把行李 放上去。故選F項(xiàng)。.選 E 根據(jù)小標(biāo)題 Keep your personal things, well, personal 和空后的“as you walk do
18、wn the aisles (過道),by keeping it in front of you and close to your body” 可知,當(dāng)你在過 道上走的時(shí)候,把它放在你前面,靠近你的身體,此處it指的是E項(xiàng)中的“your bag”。E 項(xiàng)“避免你的包碰到其他乘客”符合語(yǔ)境。.選D 根據(jù)本段的內(nèi)容,尤其是“In the narrow space of an airplane”可知,本段主 要講在空間有限時(shí)你可以怎么做。故D項(xiàng)適合作此處的小標(biāo)題。.選 A 根據(jù)空處前一句再結(jié)合空后的“offer to switch seats so that a family can sit be
19、side each other”可知,空處應(yīng)是描述你能夠跟別人調(diào)換座位的前提,故A項(xiàng)“如果你是 獨(dú)自一人旅行”符合語(yǔ)境。.選 G 根據(jù)小標(biāo)題 Be willing to swap seats with a family 中的 swap 和空后的“as switching seats while everyone is boarding can be an inconvenience for those standing in the walkways”可知,此處指的是“但請(qǐng)務(wù)必直到飛機(jī)到達(dá)安全高度之后再交換座位”,故選G 項(xiàng)。ni.讀后續(xù)寫閱讀下面材料,根據(jù)其內(nèi)容和所給段落開頭語(yǔ)續(xù)寫兩段,使之
20、構(gòu)成一篇完整的短文。續(xù)寫的詞數(shù)應(yīng)為150左右。Penny was a little girl who lived in Alaska.lt was ice-cold there. She kept praying that she could play in the green and warm gardens like we do but of course, she couldn,t.Her father, like all the men there, didnt have a job. He hunted seals and caught fishes, as was the cust
21、om. So her father hadnt even heard of money and even if he had money, there werenJ t any aeroplanes to take them abroad.Now somewhere near Penny,s house was a deep, dark forest. Everyone was afraid to enter it. They said that whoever entered it would be sucked in by a magic hole.One day, Penny was p
22、laying with her Eskimo friends when one of the boys shouted, “Hey, I dare one of you to enter the magic forest.”No one dared. Penny picked up a twig and threw it at the edge of the forest. Nothing happened. Penny was astonished. Its all a legend! We can play hide-and-seek in the woods if we want, “
23、she thought. She walked slowly towards the woods. It was getting colder and colder as she took each step. She walked right into the middle of the forest.There was a small hill with a great big hole right in the middle of it. She wanted to jump into it. She took a big, deep breath and jumped.There wa
24、s a sinking feeling in her stomach. She realized that she was falling down deep somewhere. But she did not land. Her head was spinning and suddenly all her fur clothes disappeared and there was a skirt and blouse instead of them. She was at the beach.She found that she had a bag with her. Inside the
25、 bag there was a swimsuit, a mat, a book, a bottle of lotion (護(hù)膚液)and a towel. She took all these home.Paragraph 1:When she almost stepped out of the forest, she heard her family crying.Paragraph 2:However, Penny didn t say參考范文:Paragraph 1:When she almost stepped out of the foresty she heard her family cr
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