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Read Passage 1 and then work in pairs to speak out the common expressions given in the brackets.
1.The_______________________（氟化工行业）has been one of the fastest developing and most promising chemical industries in China.
2.The main fluorine chemical products，such as household refrigerators，air conditioners，automobiles，pharmaceuticals，_______________________（农用化学品和染料）are being developed rapidly.
3.The element fluorine was_______________________（从化合物中分离）by a French chemist Ferdinand Frederick Henri Moissan.
4.Fluorine gas rips water molecules apart to produce a range of products including oxygen and_______________________（氢氟酸）.
5.Fluorspar，calcium，and fluoride are used to make lenses for focusing_______________________（红外线辐射）.
6.Isotopically fractionated uranium is created with the help of fluorinated compounds，which is an important step in_______________________（铀提纯）in power plants.
7.Because of fluorine's_______________________（反应性）with glass，it is considered valuable in the production of computer chips，microelectronic sensors，and television screens.
8.Fluorinated toothpastes are used to prevent tooth cavities and_______________________（牙齿腐蚀）as well.
9.Pure aluminum can be obtained only by using fluorine compounds in the_______________________（电解过程）of aluminum.
10.Using non-fluoride toothpaste and not drinking black and green teas can avoid the_______________________（氟化物摄入）.
Read the passage again and supply the missing words or expressions to complete the following statements in pairs.
1.China's fluorine chemical industry mainly covers four sectors,which are inorganic fluorides,_______________________,organic-intermediates and fluor polymers.
2.The slim profit in the Chinese fluorine industry results from fierce competition and sightless_______________________.
3.The Latin word"fluore",from which the name fluorine originated,means"_______________________".
4.Fluorine in its elemental form has almost the same function as_______________________to facilitate the burning of oxidizers in the rocket fuel.
5.For the sake of stronger and healthier teeth,the young children use_______________________and mouthwashes.
6.Another use of fluorinated compounds is to replace CFCs,which used to be considered as harmful substances for the earth's_______________________.
7.Fluorinated compounds can be applied to_______________________on fine glass in glass etching and other relevant industries.
8.It is common that fluorinated compounds are used in the_______________________of public water supplies.
9.There are no consistent documented evidences to show that fluorine and fluorides are beneficial to human body though they have many_______________________.
10.A nutrient diet which contains sufficient anti-oxidant vitamins such as A,C and E helps the body minimize the_______________________.
Work in groups and discuss the following questions.
1.What is an important driving factor for China's fluorine industry?
2.What are the properties of fluorine?
3.Why is fluorine considered valuable in the production of computer chips,microelectronic sensors,and television screens?
4.What are the applications of fluorinated compounds?
5.What can cause fluoride toxicity?
Read the sentences taken from Passage 1 and work in groups to translate them into Chinese.
1.Most of China's production of fluorine chemical concentrates in primary products,and there are a high proportion of these products for export.
___________________________________________________________________________________________
2.It was only in the year 1764 and 1771 that the conceptualization of fluoric acid,when heated in glass with sulfuric acid was recorded and identified by chemists respectively.
___________________________________________________________________________________________
3.It is the most reactive of all the elements,combining explosively with water,a substance normally so stable that decomposition of pure water occurs only at high temperatures exceeding some 2,700°C.
___________________________________________________________________________________________
4.Fluorinated compounds help in the production of polymers and plastics,some of which are specially designed to withstand high temperatures and large amount of stress.
___________________________________________________________________________________________
5.It is odd that fluoride,a drug,should be added to the water supply for purposes of what amounts to medical treatment with the side effect of unsightly fluorosis.
___________________________________________________________________________________________
Work in pairs to complete the statements with the information from Passage 2.
1.The chemical industry involves the companies manufacturing industrial chemicals,which are used as a wide range of___________________________________and thousands of applications in agriculture,manufacturing,construction,and service industries.
2.As companies must take many steps to convert raw materials into usable chemicals,the chemical industry involves many different___________________________________.
3.Basic chemicals fall into five categories,including polymers,petrochemicals,reaction intermediates,inorganic chemicals and___________________________________.
4.Polymers are made from___________________________________like liquefied petroleum gas(LPG),natural gas and crude oil or petroleum.
5.___________________________________,including daily products like salt,chlorine and soda ash,belong to the oldest chemical categories.
6.Phosphates,ammonia and potash are fertilizers,which are used to supply the soil with___________________________________for growing plants and agriculture.
7.The government monitors the quality of the life science products by setting very___________________________________before its production.
8.Specialty chemicals,or___________________________________,are produced in smaller amount but cost far more money.
9.Consumer chemicals,which usually include daily products such as___________________________________and___________________________________products,are sold to the customers directly.
10.Chemical industry is an essential part of the___________________________________,and it has wide-ranging effects in a wide range of other industries.
Read the passage again and translate the expressions into Chinese or English in pairs.
1.raw material ____________________________________________
____________________________________________ 原始数据
2.chemical reaction ____________________________________________
____________________________________________ 中和反应
3.inorganic chemical ____________________________________________
____________________________________________ 有机化学品
4.liquefied petroleum gas ____________________________________________液化天然气
____________________________________________
5.crude oil ____________________________________________
____________________________________________ 原矿
6.synthetic rubber ____________________________________________
____________________________________________ 化纤
7.soda ash ____________________________________________
____________________________________________ 苏打饼干
8.sulfuric acid ____________________________________________
____________________________________________ 醋酸
9.hydrogen peroxide ____________________________________________
____________________________________________ 氢弹
10.industrial gas ____________________________________________工业酒精
____________________________________________
Read Passage 3 quickly and answer the following questions.
1.How is aerogel made according to the passage?
2.What happens to aerogel if pressed moderately?
3.Why does aerogel show different colors against dark or bright backgrounds?
4.What are the differences between aerogel and carbon nanotube?
5.What are the common types of aerogel?
Read the passage again and fill in the blanks with the information from the passage to complete the passage outline.
