M7U1U4课文内容填空.docx

1、M7U1U4课文内容填空M7U1 The evolution of video and sound devicesEarly history of TV Many different people _ to the development of TV. Most early TV broadcasts were made _ a system developed by John Logie Baird in the UK. However, his system was very _ and had many _. An American, Phino Farnsworth, made imp

2、ortant _ in the development of TV. Modern TV use many of the _ first discovered by Farnsworth.Sb _ the first color TV in 1928, but it was not until 1938 that the first color TV programs was _. It took more than two decades, though, until 1951, for _ color TV broadcasts to begin in the USA. Regular c

3、olor TV broadcasts were _ in the UK until 1967. However, _ a short time nearly all TV broadcasts were made in color, and within five years more color TVs than black-and-white TVs were being used.The modern age: satellite TV Satellites were used to broadcast TV beginning in 1962. Satellites _ TV to b

4、e broadcast _ over vast distances, with everyone _ the same broadcast at the same time. They also make TV _ to people who live far away from cities, and satellite dishes can often be seen _ throughout the countryside and _ areas. Of course, only a small percentage of people _ satellite dishes. Howev

5、er, most people still _ from satellite TV, as local TV companies broadcast the signals they get from satellite receivers to the population _ by.Early history of sound recorders It all began in 1877, _ sb made the first recording of a human voice on his invention, the record player. Early record play

6、ers used round tubes to _ on. However, in 1887 sb, a German living in the UAS, _ a record player that use discs as _ to tubes, and so the modern record player was born. The first record players had to be _ up by hand and only played records that were two minutes long. Timely surely have changed.Soun

7、d and video recorders In 1928, the first tape recorders _ to copy sound were made in Germany. Most early recorders _ steel tape to record on, which made them heavy and _ to use, or paper tape, which is easier to use but often _. It was not until the early 1950s that most tape recorders began using p

8、lastic tape as they do today. Meanwhile, electrical _ eventually became so small that, by the late 1960s, _ cassette players were developed, along with video recorders which were used by TV stations. By the late 1970s, video recorders small and cheap enough for home use were _.Sound and video go dig

9、ital In 1982, the first CDs were made _. CDs are often used for _ and playing music because they have a much better sound _ than traditional records and cassettes. In 1993, the VCD was born, and in 1995, the DVD was invented. The DVD is now the _ for recording and playing back video.The future With

10、the development of _ technology, sound and video can now be _ on a PC, on the Internet, or using some form of _ storage. This will soon make records, cassette recorders, CDs, DVDs, and even TVs things of the past. Technology is now changing faster than most people can keep _ with. Who can _ what the

11、 future will bring?二、翻译1 很难预知未来会发生什么？2 经过认真考虑， 我们最终还是拒绝了他在会议上提出的建议。3 他投票赞成这一决定只是因为他没有其他选择。4 她随意的衣着不适合这个重要的典礼。5 我不认为女性应该为了家庭而牺牲独立性。6 住在主干道旁边的主要的缺点是喧嚣的杂音。7 很显然， 定期运动是健康生活的重要组成部分。8 在这样的情况下，他开始怀疑自己的判断。 M7Unit 2 two life-saving medicinesThis article will focus on two drugs that started _ in medicine . If

12、 you _ up any medicine cupboard or go to any medicine counter in the world , it is likely that you find aspirin and penicillin . Both of these medicines have saved millions of peoples lives and have proved _ to mankind since they were invented .Aspinrin was_ in 1897 . However , the basic chemical us

13、ed to make aspirin can be found in nature . Nearly 3,5000 years ago , people _ on leaves or drank a kind of tea made from leaves _ a special chemical to _ body pains and fever . About 2,5000years ago , the Greek physician Hippocartes , father of all doctors , made a juice from a tree bark _ salicyli

14、c acid for the same _ . It was in 1897_ a European _ called Dr Felix Hoffmann produced aspirin from this chemical . The first _ of this medicine took place in 1899 , when the company Hoffmann worked for began _ the medicine in _ form to physicians to use with patients . A year later , in 1900, aspir

15、in was sold in shops in the form of_ . Within a short time , aspirin became the _ medicine in the world for pain _ . Not only has aspirin proved _ for reducing fever and helping stop pain , but there are also other things that aspirin can help with . Lawrence Craven , a doctor form the USA , introdu

16、ced the idea in 1953 that aspirin had the _ to reduce the risk of heart attacks , because it helped the blood _ better . The report was _ . However , in 1971 , Smith and Willis from the UK proved that aspirin could have that effect , and in 1977 a study _ out in the USA showed that aspirin could pre

17、vent strokes , Eleven years later , Dr Thun from the USA showed that aspirin could _the risk of some cancers by 40 percent . In 1999 , aspirin was over 100 years old , and yet there have been more discoveries about how it can help increase the _ of peoples lives . In 2003 , a Chinese doctor , Dr Yua

18、n Mingsheng , found that aspirin could reduce blood sugar levels and , therefore , help people with _ . Another drug that has helped increase the _ of peoples health is penicillin , which is considered by many to be one of the most important medicines in _ society . It was discovered by a Scottish s

19、cientist named Alexander Fleming in 1928 . He noted that a dish in which he was trying to grow _ for an experiment looked _ - there was blue _ in it . It astonished him to see the bacteria surrounding the mould dead , which meant that the mould had _ them . Fleming tried this mould _ on another bact

20、erium and found that it killed that bacterium too . He immediately realized that the mould might have an _ in treating illnesses caused by bacteria . He _ the liquid made from the mould penicillin “. However , the development of penicillin as a drug faced two problems . First , he was unable to find

21、 a _ to make penicillin pure enough to work as a medicine . Second , it was difficult to produce penicillin in the ample _ needed to be effective . In 1940 , two other scientists helped solve these problems , and managed to make and test the new drug in large quantities . Since the new drug was need

22、ed for World War , the government approval process for penicillin was _ , and mass _ began in 1944 . _ to the widespread use of penicillin , many lives were saved during the war . If penicillin had not been _ , many people would have died _ sickness for even small wounds . Penicillin became the grea

23、test drug of the 20th century , saving millions of lives .翻译句子1. 我们高兴地看到这一科学变革加速了社会的发展.2.她拥有许多可贵的品质,这些品质对她的成功是至关重要的.3.我认为他有在这个领域成为专家的潜力.4.我发现丹尼尔的行为有点反常,但猜不出为什么.5.只有少数的专家赞同这些问题不会持续太久的观点.6.我们非常惊讶地发现有人改变了房间内家具的摆放. 7.当在电视上看到我们的国旗在奥林匹克运动会上升起时,我们发出了一阵欢呼声.8.这个项目被推延了,因为我们还没有得到政府的批准.Unit 3 The Internet has p

24、ositive effects on our livesMy name is Zhu Fei and I am speaking in of the InternetI believe that the Internet has on our lives. There are two main which must be included when we analyse the Internet. The first is its for people who are looking for information. The second is our to others through th

25、e Internet. When people need information, from the news and weather forecasts to travel packages and academic research ,the Internet is now the first they . With the touch of a button or the of a mouse ,a student will find information from the largest libraries and museums in the world at his or her

26、 .Internet users can communicate with experts on all sorts of topics, and read articles written by people who are leaders of their fields.Yet, some people are .They that surfing the Internet is a waste of time. They make the that children spend too much time chatting and playing games instead of foc

27、using on their school work. However, a recent survey in the USA shows that 80 per cent of Internet users it mostly to search for answers to questions. The second most use of the Internet, for 79 per cent of Internet users,is to find out information about hobbies. These prove that gathering informati

28、on is the primary use for the Internet.Another truly wonderful aspect of the Internet is the people use it to build social .One of the greatest benefits of Internet friendships is that they are on common interests, appearance or age. Young people from backgrounds and different countries can form fri

29、endships that will last their entire lives. ，people who are disabled and must stay in their homes can and communicate with others around the who have similar interests. Without the Internet, these people would have fewer to meet people. For these reasons, I believe the Internet is a positive tool th

30、at helps make our lives better.The Internet has effects on our livesMy name is Li Lei and I will be speaking the Internet. In my opinion, the Internet has negative effects on our lives. The main of the Internet I will today are that it has too much information that has not been for ,and that it is t

31、he way people spend their time.Of course, up-to-date, accurate information is an important thing for anyone who is doing research. One great of the Internet is that it provides information . One great of the Internet, ,is that it is difficult to know whether the information is true and accurate. The huge amount of false information on the Internet becomes a problem every day. This is very because we cannot