1、Unit 3 Inventors and inventions Period 2 Learning about Language contribute 意为“捐款，捐助” 。答案 A14The young scientist_his experiments and made a great contribution to our country.Adived himself into Bdevoted himself intoC dived into Ddevoted to解析 句意：这位年轻的科学家潜心于实验，为我们国家做出了伟大的贡献。dived into 跳入，潜心于。答案 C15Not
2、 until I began to work_realize how much time I had wasted. Adidnt I Bdid IC I didnt DI解析 not until 的倒装句型，用部分倒装，助动词提到主语之前，而且 not已经移到句首，因此句中不能再出现，故选 B。答案 B.阅读理解ASince the 1970s, scientists have been searching for ways to link the brain with computers. Braincomputer interface(BCI) technology could help
3、 people with disabilities send commands to machines.Recently, two researchers, Jose Millan and Michele Tavella from the Federal Polytechnic school in Lausanne, Switzerland, demonstrated(展示)a small robotic wheelchair directed by a persons thoughts.In the laboratory, Tavella operated the wheelchair ju
4、st by thinking about moving his left or right hand. He could even talk as he watched the vehicle and guided it with his thoughts.“Our brain has billions of nerve cells. These send signals through the spinal cord (脊髓)to the muscles to give us the ability to move. But spinal cord injuries or other con
5、ditions can prevent these weak electrical signals from reaching the muscles， ” Tavella says. “Our system allows disabled people to communicate with external world and also to control devices”The researchers designed a special cap for the user. This head cover picks up the signals from the scalp(头皮)
6、and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.Prof.Millan, the team leader, says scientists keep improving the com
7、puter software that interprets brain signals and turns them into simple commands. “The practical possibilities that BCI technology offers to disabled people can be grouped in two categories: communication, and controlling devices. One example is this wheelchair.”He says his team has set two goals. O
8、ne is testing with real patients, so as to prove that this is a technology they can benefit from. And the other is to guarantee that they can use the technology over long periods of time.【语篇解读】 本文主要介绍了 Jose Millan 和 Michele Tavella 利用Braincomputer interface(BCI) technology 制作的由人的意念控制的轮椅以及其工作原理等。1BCI
9、 is a technology that can_.Ahelp to update computer systemsB link the human brain with computersC help the disabled to recoverDcontrol a persons thoughts解析 细节理解题。由第一段中的scientists have been searching for ways to link the brain with computers. Braincomputer interface (BCI) technology could help people
10、 with disabilities send commands to machines.可知选 B。答案 B2How did Tavella operate the wheelchair in the laboratory?ABy controlling his muscles.B By talking to the machine.C By moving his hand.DBy using his mind.解析 细节理解题。由第三段内容Tavella operated the wheelchair just by thinking about moving his left or ri
11、ght hand. He could even talk as he watched the vehicle and guided it with his thoughts.可知选 D。答案 D3Which of the following shows the path of the signals described in Paragraph 5?A. scalpcomputercap wheelchair B.computercapscalpwheelchairC.scalpcap computer wheelchairD.capcomputerscalp wheelchair 解析 细节
12、理解题。由第五段前三句可知选 C。答案 C4The team will test with real patients to_.Amake profits from themB prove the technology useful to themC make them live longerDlearn about their physical condition解析 细节理解题。 由最后一段中的 One is testing with real patients, so as to prove that this is a technology they can benefit from.
13、可知选 B。答案 BBLeo Baekeland never gave up his dream of creating a special kind of plastic that would keep its form after it cooled. His invention was Bakelite，an inexpensive，widely used plastic.Leo was born in Belgium into a lower, middleclass family. He studied at the University of Ghent in 1882 and e
14、ventually graduated with a doctorate in natural science at the age of 21. He taught there for several years before he traveled on a scholarship to the United States. Once in New York, Leo met Richard Anthony. Anthony saw potential in young Leo and offered him a job of working in America as a chemist
15、 for his company. Leo worked for Anthony for the next two years before unsuccessfully attempting to start his own consulting business.After failing to see success in his own business operations, Leo decided to return to what he knew and he started producing a kind of photographic paper that would al
16、low good pictures to be taken in artificial light. He did so well in the beginning that he started a company called Nepera Chemical Company while creating a special kind of paper called Velox. Within two years, Kodak Company bought the right to Leos discovery for $ 1,000,000. Leo accepted and used t
17、he money to set up his own laboratory in his backyard in New York and lived a comfortable life.Leos next project was to come up with a hard yet moldable(可模压的)plastic. After much experimentation, Leo finally came up with a plastic and called it Bakelite. Its special feature was that at a high tempera
18、ture and pressure, Bakelite can hold its form，even under great heat. Leo made his achievement public in February, 1909. The invention of Bakelite, marked the beginning of the Age of Plastics.Whether we are listening to the radio，driving down the road, or drinking from our plastic bottles，we can than
19、k a man who had the foresight and courage to pursue what he thought was possible.【语篇解读】 本文主要讲述了 Leo Baekeland 在生意失败之后，利用 Kodak Company 所给的钱做资金，从而发明了 plastic 的事情。5What is the passage mainly about?AThe life of Leo Baekeland.B The coming of the Age of Plastics.C The inventions of Leo Baekeland.DThe pro
20、cess of inventing Bakelite.解析 主旨大意题。由文章第一段可知。答案 A6Why did Leo Baekeland decide to produce a kind of photographic paper?ABecause he wanted to become an employee of the Kodak Company.B Because he became aware that his own business wouldnt be successful.C Because he didn t like working as a chemist.DBe
21、cause he had a great interest in taking photos.解析 细节理解题。由第三段第一句可知。答案 B7Whats the right time order of the following events?aLeo invented Bakelite.bLeo went to the United States.cLeo invented the paper Velox.dLeo studied at the University of Ghent.eset up his own laboratory in New York.Ad，b，c ，e ，a Ba
22、，c ，d，b，eC d，b，c，a ，e Db ，a ，e，c ，d解析 细节理解题。Leo 先在 the University of Ghent 求学，然后去了美国，生意失败之后，他发明了 the paper Velox，用所得的钱在纽约建立了自己的实验室，最后发明了 Bakelite。故选 A。答案 A8We can learn from the passage that Bakelite is a plastic that_.Ahas been widely used since the early 19th centuryB is too expensive for most people to buyC keeps its shape under high heatDhas a longer life than other kinds of plastic解析 推理判断题。由第四段第三句可知。答案 C
