懂你英语L6Unit

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1、Unit 3-1 listening 偷窃They were locked up the safe and the only way to open the safe was with an 8-digits access code. Whoever got in the safe, must have back code. As far as he knew, nobody else had it, or have ever asked to use it to get something from the safe. Only 2 people in the company were au

2、thorized to have the code. He had the code of course, and so did his assistant, Sylvia. There was no reason for Salvia to take the documents, so he couldnt imagine that it was her. That would make sense and she was completely trustworthy. So somebody else must have the code and stolen the document.

3、She had a notoriously bad memory so she kept a lot of notes. But Sylvia wasnt that careless or irresponsible. She had probably stored the code somewhere on her computer and the theft was able to get it from there. But who could he have been. Suddenly, he realized that there was a new IT guy in the o

4、ffice. He maintained the companys computer network and provide technical support for the staffs. Perhaps he was the guilt he wanted. If anyone could have done it, he certainly had the skills. He was a security expert and he had helped Sylvia stored something on her computer last week. Then john real

5、ized that nobody had done a proper background check on the guy. One of other engineers in the company had recommended him and he seemed nice. They had been in a hurry to hire someone for the position so they didnt check this background very carefully. Suddenly, he had a bad feeling. immediately, he

6、used his smartphone to check the companys bank accounts. To his horror, he found that a large amount of money was missing from one of his accounts. There had a large withdraw earlier that morning, more than 75 thousand dollars. He then discovered that the money had been wired to an account in anothe

7、r country. So not only did the IT guy get the access code for the safe, but he also got the lodge information from the bank. This was a disaster. John immediately called the police and reported the incident. He also called the bank to see if they could stop the transaction. Unfortunately, they said

8、it was too late. the transaction had gone through. Just then, john got an email with the subject line, from the IT guy. It showed smiley face and said thank you for being so stupid. Dont waste your time trying to find me. Ive left the country and will never return. Be thankful that I didnt everythin

9、g in the account. This should a good lesson for you. It was signed, your IT guy. Unit 3-1 dialogue 评论和建议Well, what did you think of my presentations. Did you want me to be frank? I know we work very hard on it. Yes, give me to it straight. I have my own opinion too. But I appreciate your comments an

10、d suggestions. You said you had your own opinion about it. so how do you think of them. I thought it went ok at first. But I could feel there were some bad transitions(过渡). I think I spent too much time on some slides and didnt express them well. I agree on most points. But to me, it was flat. 5 min

11、utes into it I had a hard time paying attention. Flat? Do you mean my voice?Yes, thats part of it. there is very passion almost like you were reading it. Im sure you can do better. Do you have any suggestions?First, let me say I like the slides themselves. The designs were nice and easy to read. But

12、 one thing you didnt do was engage with the audience. You focus on your slides and didnt address your audience. Oh, I was trying to but I guess I was too nervous. I didnt want to forget anything. You have a great smile. You need to show that smile and expressions when you present. Make eye contact.

13、When you present, I notice you always do that and your pause between ideas. But it seems so easy for you. For me, I look at the faces in the audience. I watch their expressions. I really try to communicate with them. Once I do that, it comes naturally, because it becomes real communication. You seem

14、 to enjoy it. Well, Im always nervous too before I get started. But once I contact with the audience, Im ok. So contacting with the audience is the key. Focus on them and not me, right?Yes, well put. In fact, if you do that, you will have to adjust your presentation. It has to flow like in a read co

15、nversation. We have to respond to each other. And the pauses are so that the presentation can breathe. Hmm, it seems so obvious. But Ive never thought of it like that. Thats a great advice. I wish we had talked before my presentation. If we had, you may not have been open like you are now. anyway, I

16、m sure your next presentation will improve. It takes practice like anything. Dont be too hard on yourself. No, I wont. But next time I will do better and I hope you there. OK, well, lets get back to work. Unit 3-1 Reading 化石能源和哲学悖论Depletion of fossil fuelsA number of scientists are emphasizing the t

17、remendous challenges that will soon be faced when the depletion of fossil fuel supplies coincides with(恰逢) an alarming increase in the global population. They highlight agriculture which is heavily dependent not only on gasoline to fuel machinery, but also on the petrochemicals necessary to manufact

18、ure synthetic(合成的) fertilizers and pesticides. Without these petrochemicals, crop yields would be only a fraction of what they are today. To assume that an abundant source of renewable energy will address this challenge is to ignore the vital non-fuel uses of petrochemicals.Then there is the challen

19、ge posed to the current levels of mobility. As a fuel, gasoline is unrivalled(无敌的) in its portability. Electricity requires bulky batteries and hydrogen is notoriously difficult to store. Biofuels might seem like an alternative, but the energy consumed when converting corn into bioethanol, for insta

20、nce, greatly exceeds the output when the fuel is utilized. In any case, once we reach a crisis in the food supply, it will not make sense to divert food crops to other uses.Although there seems to be a widespread belief that the era of oil dependency is coming to an end due to some technological rem

21、edy(补救方法), this may be mistaken. Relying on such an assumption can lead to complacency(自满) and a failure to take precautions(预防措施). Experts may not be able to come up with solution that can lead to a pain-free transition. Scientists warn that relying on alternative resources might only support half

22、of the global population. The absence of realistic alternative to fossil fuels will mean that the first priority will be to curb the demand for food. Petrochemicals are used to manufacture pesticides, which are good for agriculture. The meaning of catch 22One of the most interesting books of the 20t

23、h century was the novel, Catch 22. In the novel, the term has nothing to do with catching anything. It has a much deeper meaning, and it describes a kind of logical conundrum(难题) thats worth exploring.First, its important to put the phrase into context. In the novel, a group of American bomber pilot

24、s is on an island in the Mediterranean. They face death almost every day when they fly their bombing missions. Many have already lost their lives; the remaining pilots know that it is only a matter of the time before they will be the next victims.One of the characters in the novel is a doctor. It is

25、 his job to see that the pilots are fit to fly. In particular, there is rule that says he has to ground anyone who is crazy. To ground them means to remove them from active duty so that they dont fly.Some of the men believed in the principles they were fighting for. They were willing to give their l

26、ives for their country. But to others, this was crazy. They thought the whole thing was insane. One of them, Yossarian, wanted out. He was friends with the doctor, and he wanted the doctor to ground him.When Yossarian asked the doctor to ground him, the doctor replied: “youre wasting your time, your

27、e not crazy”.Yossarian told him to ask one of the other pilots, Clevinger, to tell him how crazy he was. “There is no point. Hes crazy.” The doctor replied.” Crazy people cant decide whether you are crazy or not.”“Clevinger isnt crazy! hes one of the sanest pilots here.”“So hes obviously out of his

28、head,” said the Doc. “Hes got to be close calls hes had.”“well, if hes crazy, why dont you ground him?”“I cant unless he asks to be grounded. Thats part of the rule.”“So all he has to do is ask?”“no, then I cant ground him.”“So there is a catch,” said Yossarian, trying to get things straight.“Sure,

29、theres a catch,” said the Doc, with a slight smile. “Catch 22. If he asks, then he cant be crazy. Only those who are crazy are grounded.”“theres some catch,” observed Yossarian.“its the best there is, ”the Doc replied. Unit 3-2 listening 流行病Despite advances in technology, one of the biggest threats

30、to human survival comes from primitive(原始的) lifeforms. Infectious diseases are caused by microorganisms, such as bacteria, virus and parasites(寄生物). These organisms have no access to education or technology, but they present a huge challenge to humanity. Thats because they are adaptable. Just as ada

31、ptability has helped humans survive, it makes it more difficult to control infectious diseases. As conditions change, the organism which caused these diseases adapt and become stronger. There are several kinds of infectious diseases. Bacterial infections such as pneumonia(肺炎), are caused by bacteria

32、. these infections can be treated by antibiotics(抗生素), which kill the bacteria. viral infections are caused by virus, such as the influenza virus. These can sometimes be treated by vaccines, such as flu vaccines. An example of parasitic(寄生虫的) infection is malaria(疟疾). Malaria is caused by parasites

33、transmitted to humans by infected mosquitoes. Once inside the body, the parasites can be difficult to kill or control. And also, these parasites are also adaptable. How serious are infectious diseases. Considered what happened in 1918, the influenza pandemic(流行病). It started in the fall of 1918 with

34、 what seemed to be something no more serious than a common cold. In the next 2 years however, it infected a fifth of the worlds population. In fact, it turned out to be the most deadly epidemic in history, killing between 20 and 40 million people. The influenza virus that caused it was much stronger

35、 than previous influenza viruses. Its molarity rate was 2 and a half percent compared to a point 1 percent in previous epidemic viruses. Its stuck quickly with no mercy, sometime killing people within hours. School and business closed in many places, and people wore masks to prevent the transmission

36、 of the virus through the air. What was unusual about this pandemic was that it was most deadly for people age 20 to 40, rather than the elderly and young children. Now a century later, we have flu vaccines that have reduced the severity of the epidemics. These vaccines needed to be updated every ye

37、ar because the virus changes and new strange immerge. What researchers fear is that a new strange will develop and cause another pandemic. Once an outbreak occurs, transmission of the disease will be even faster than the before. An unattempt consequence of our improved transportation system will be

38、the speed in which an epidemic can spread. Experts predict that the public health systems will be overwhelmed and unable to react quickly enough. So the best defense will be to prevent an outbreak from occurring. This will require global cooperation and the sharing of data. It may also require chang

39、es in how humans interact with animals. Animals such as birds and pigs carry viruses that may mutate(变异、突变) into a strain(一株) that can infect humans. Such a new strain could lead to another pandemic well before a new vaccine could be developed. Since diseases epidemic dont stop at national boarders,

40、 this is a global issue requiring a global action. The threat of a global epidemic is another example of why we must learn to live together. Unit 3-2 dialogue 子女教育方式You know, my husband and I are having a terrific fight over how to rise our son. What about?Hes only 4 years old. My husband Im putting

41、 too much pressure on him. He thinks its wrong thing to do. I wouldnt know. Ive not even married yet. Thats my problem. I wish I had a husband to disagree with. Well, he thinks its important for kids to have time to be bored. Bored?Yes, he really said that. Can you believe it?Why did he think so? Di

42、d he have time to be bored when he was a boy. Well, he grew up in the countryside. He said he had to find things for himself to do. He feel sorry for his kids these day because their days were so structured. Hmm, I see its point. But things have changed a lot since he was a boy. Thats exactly what I

43、 told him. Then he started to get angry. That doesnt sound like him. Hes usually so calm and reserved. In fact, I cant ever remember he and his express in opinion. Well, the other day our boy said he didnt like one of our teachers. Its a English teacher. And then that got my husbands attention. What

44、 happened?He got angry and he said he wasnt happy with all the emphasis on English and math. He said I should find some places for our boy to do more of what he wants to do. He said hed find the class the teacher who encourages kids to explore things. That sounds a bit idealistic. Thats what I told

45、him. Then he said its important to learn how to be independent and not always depend on being told what to do. He said that can develop creativity and the love of learning. Certainly. What happens when he is behind of other kids in school? wont he be discouraged?He said he wanted the boy to deal wit

46、h it and see what happens. Some people are more competitive and some arent. Anyway, its an interesting point of view. It may work for some kids and not for others. What about your boy? What do you think?He has a good imagination. sometimes he talks oneself that he really likes music and dancing. He

47、has a lot of energy. Sometimes its exhausting to be around him. I guess if I were you, I just give him a lot of choices and see what he is interested taking in. and he needs a place where he can use all that energy. Yes, thats what my husband wants to do. I just get nervous because all his friends a

48、re taking classes. I dont him to fall behind. I dont know what to say. Maybe you do some researches and what others advise. Im sure you are not the only one facing this problem. At least your husband is taking an interest. If I ever get married, I hope my husband will be as involved as yours. But he

49、 has to help you with this and just complaint. Yes, thats what we are fighting about. I cant be expected to do this on my own. You have to do this together. Good luck. And wish me luck in finding a husband, ok. Unit 3-2 Reading Wi-Fi诞生和人工智能Hedy Lamarr a Hollywood star and mother of Wi-FiHedy Lamarr

50、was born Hedwig Eva Naria Kiesler in 1914 in Vienna, Austria. By the time she was a teenager, she had decided to drop out of school and seek fame as an actress. She first appeared in a German film in 1930. She was attractive and talented enough to be in three more films in 1931, but it was her contr

51、oversial film “Ecstasy”(入迷) that brought her worldwide fame as an actress. In 1937 she fled from her country and secretly moved to Hollywood, where she reinvented herself. She changed her name to Hedy Lamarr, with the nick name” the most beautiful woman in films”. However, Lamarr defied(挑战) the lead

52、ing-lady stereotype by also pursuing an interest in mathematics and engineering. She soon took up inventing. Her earliest inventions included an improved traffic stoplight and a tablet that would dissolve in water to create a carbonated drink(碳酸饮料).With the ongoing world war, Lamarr was inspired to

53、contribute the war effort. She designed a radio guidance system for torpedoes(鱼雷). With the help of composer(作曲家) George Antheil, whom she met in 1940, she discovered a way to break up signals and transmit them over different frequencies. Using a method similar to the way player piano work, they des

54、igned a frequency-hopping system(跳频系统) that would continually change the radio signals sent to a torpedo. While others, including Nikola Tesla, had explored similar ideas of frequency hopping, Lamarr and Antheil obtained a patent for their invention in 1942 for what would become known as spread-spec

55、trum(扩频) technology.Although the US Navy did not adopt the technology during the war, it was used during the Cuban Missile Crisis in 1962. For decades Lamarrs technology remained behind the scenes, but ultimately it led to the creation of todays spread-spectrum communication technology, such as Wi-F

56、i networks, mobile phones, GPS and Bluetooth technologies.Lamarr and Antheil eventually received several awards for their lifetime creative achievements that contributed so much to society. They were inducted(就任;授予) into the national investors Hall of Fame in 2014, after her death in 2000. The chall

57、enge of AIThe internet and smartphones have changed the world and how we relate to each other. Instead of meeting in person, we increasingly interface through handheld devices. In a sense, real people are being removed, replaced by technology and virtual friends. Some people even say that they prefe

58、r to confide in(信任) their virtual friends rather than their real friends!AI, or artificial intelligence, is another technology that is highly disruptive(破坏的). With AI, smartphone are other devices will have even more capabilities. They will be able to converse with us and tell us jokes. They may eve

59、n become personal tutors. They will know what kind of problems we have, our preferences, and any content we want to learn or practice, they will be able to adapt to our needs and be available at any time. And all this will be at less cost than using a human. In fact, the substitution(替换) of AIs for

60、human labor has the potential to transform our world. Experts warn that smart machines may cause widespread unemployment. Many works will become redundant(多余的), replaced by machines that can perform cognitive tasks better than people. An even greater danger is that they will develop personalities an

61、d become more interesting than people. Work us already underway(起步的) to produce AI companions for lonely people.Are these development something to worry about or something to welcome? How are they different than developments in the past, such as the industrial revolution? Cars replaced horses; machi

62、nes and industrial robots replaced factory workers. Since the shift to AI is inevitable, the challenge for policy makers will be to help existing workers acquire new skills. Future generations must be prepared for a workplace populated by AIs that will continue to develop and take on new tasks. Are

63、we up to the task?Unit 3-3 listening 斯坦福监狱实验In 1971, psychologist created one of the most important experiment in psychology. The experiment known as the Stanford prison experiment, look at the impact of situation in human behavior. The researchers, led by Philip Zimbardo, wanted to know how situati

64、ons could affect how people behave. In participle, we wanted to know if good people would change their personalities and lose their values. In the experiment, participants were divided into 2 groups. One group became prison guards and the other group became prison inmates. The experiment was set up

65、in Stanford universitys psychology building. A group of 24 students was chosen to play the roles, 12 guards and 12 prisoners. The participants came from a large group of volunteers who wanted to participate in psychology experiment. Those who were chosen had no criminal background and had no significant medical or psychological problems. They agreed to participate in the experiment for 1 to 2 weeks period. The prisoners had to remain in prison 24 hours a day d