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Task 3 How hard is it to get beautiful hair Beautiful hair cannot be taken for granted. Environmental factors, chemical treatments and the mechanical damage done by combs, brushes and blow dryers all have a bad effect on the hair in the long run. The hair parts into thin pieces, loses its brightness, becomes hard and easily broken and develops split ends. Our Heated Scissors, a new approach to pretty hair, is a modern technological device available in most cities now. No hairdresser needs to be told how crucial the quality of a pair of scissors is. But all the same, few have imagined a cutting tool as sharp as razors (剃须刀). What’s more, the heating element is located in the interior of the edges, with the best possible heat transference to the cutting edges. Heated cutting edges with individually adjustable temperatures seal the cuts instantly. The cut end of the hair is closed up smoothly and neatly. Right from the very first cut, the hair takes on a new look with a brilliant shine. Where is the heating element fixed in the scissors It is fixed in the ______ of the edges.

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综合安全技术下列常见机体毁坏事故的类型中，( )是自行起重机的常见事故。

A. 断臂事故
B. 机体摔伤事故
C. 相互撞毁事故
D. 倾翻事故

Mr. Green was driving with boxes of ice cream back to the storehouse when he (41) himself in a traffic jam(交能堵塞). Feeling hot (42) the sun, he took an ice-cream and ate it. Four (43) children in the car behind watched him eat it. He was (44) for them and gave them some ice cream, too. In minutes, he was surrounded by children. By the time traffic began to move ,he had gone through four cardboard boxes. (45) of explaining the situation to his boss,he decided to buy the ice-cream himself. When he (46) to the storehouse,however,he was (47) to the manager’s office and asked (48) he had given away the company stock. He thought that he would be punished. Instead,his boss smiled in a (49) way and said that it was the best public (50) the company had had in years,people had been phoning in to thank the company.

A. named B. asked C. called

Many people are surprised when they find the Internet(因特网)was set up in the 1960s. At that time, computers were large and expensive. Computer networks(网络) didn’t work well. If one computer in the network broke down, then the whole network stopped. So a new network system (系统) had to be set up. It should be good enough to be used by many different computers. If a part of the network was not working, information could be sent through another part. In this way computer network system would keep on working all the time. At first the Internet was only used by the government, but in the early 1970s,universities(大学) ,hospitals and banks were allowed(允许) to use it too. However, computers were still very expensive and the Internet was difficult to use. By the start of the 1990s, computers became cheaper and easier to use. Today it is easy to get on-line(上网) and it is said that millions of people use the Internet every day. Sending e-mail is more and more popular among students. The Internet has now become one of the most important parts of people’s life. At first computer networks ______.

A. worked quite well
B. were very popular
C. went wrong easily

Task 2Dear friend, Have you been looking for the Best Free Online on the web, but gotten stymied by all the hype with no substance Have you found yourself wasting time searching and not spending it studying and learning about the IT topics you need to learn You’ve now found the solution to what you need. My computer and IT training members’ site contains the web’s best collection of computer and IT training and tutorial resources. These computer educational sites are the best ones gleaned from literally thousands that I’ve researched over the past several years. You receive detailed, drilled down learning links to all the important IT topics today, including programming, web development, internet/networking, and software training. Save your valuable time and let us find the best online free computer and IT training for you on the web. I know all the tricks and ways of discovering where the most sought- after free learning and training content is. Then I make it all available to you on our member site. And I’m also adding to this best collection of web resources on a continuing basis. A little about myself, I’ve been doing research for many years, in fact, since my college days, when I was the top researcher in business grade school earning my MBA. When the web started to gain popularity in the mid ’90s my friends asked me to find the best web content in topics they were searching because they knew I had a trick for finding it. I soon knew how I was going to help people find the content that they were looking for and decided it was going to be something I knew about, IT and computer training and tutorials. I have a Computer Science B.S. degree and I’ve been a computer consultant for the last 20 years. Yours, Albert The meaning of "collection" in this passage could be the web’s best ______ and IT training and tutorial resources.