II. Writing PracticeII.1Find in B part the English equivalent to the Russian word in part A.
II.2 Complete the text with the words given below. The materials technology has... a lot over the past years. New more reliable materials have... the old ones. Other advances in materials science may lead to further... performance. Let’s have a look at some examples of sport.... Poles are often... from glass-fibre... that increase their.... Such poles are lighter and less... than.... poles. ... and glass-fibre composites are also used for... hockey sticks. This helps to... stiffness...., such hockey sticks can be... for players. That is why researchers are trying to... their performance. Carbon-fibre composites have also replaced aluminium in tennis.... Such composite rackets have a higher... than aluminium..., so rackets can be even stiffer and.... ____________________________________________________________
changed performance made improvements improve equipment carbon-fibre replace aluminium alloys composites producing increase dangerous stiff stiffness lighter rackets however
II.3 Translate the passage into Russian use the dictionary if necessary. Despite well-granted criticism, plastics possess numerous advantages. The most important of them is certainly energy conservation. Here are some simple examples. Food must be kept fresh and healthy. In fact, each pound of plastic packaging reduces 1.7 pounds of food waste. Besides, plastics make packaging more efficient, which ultimately conserves resources. For example, you need 2 pounds of plastic for delivery of 1.000 ounces of juice. You will have to use 3 pounds of aluminium, 8 pounds of steel or 27 pounds of glass for the same amount of juice. Plastics also help to conserve energy on your home. Vinyl windows lower your heating and cooling bills. Plastics parts and insulation help major appliances – like refrigerators or dishwashers – resist corrosion, last longer and operate more efficiently. Indeed, their energy efficiency has improved by 50 percent since 1970s. Health, safety, high performance – plastics help make these things possible.
ОГЛАВЛЕНИЕ Введение................................................................................................. 3 Unit 1 Engineering materials...................................................................4 Section I................................................................................................. 4 Section II................................................................................................ 9 Section III............................................................................................... 12 Unit 2 Metals and their alloys................................................................13 Section I................................................................................................. 13 Section II................................................................................................ 20 Section III............................................................................................... 23 Section IV............................................................................................... 26 Unit 3 Plastics........................................................................................31 Section I................................................................................................. 31 Section II................................................................................................ 40 Оглавление............................................................................................ 45 Список использованных источников................................................. 46
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