1. переведите текст письменно. 2. составьте 10 вопросов к тексту (5 вопросов к предложению в активном залоге, 5 вопросов к предложению в пассивном залоге 3. составьте словарь терминов, которые встретились в вашем тексте. вариант 6. non-ferrous metals are more expensive than ferrous metals and are used only when some characteristic not possessed by iron or steel is essential or desirable in application. these characteristics are: high electrical and thermal conductivity, high corrosion resistance, non-magnetic qualities, light weight, etc. the metals most frequently used to make non-ferrous metal castings are copper, tin, zinc, lead, nickel, gold and aluminium. some of the basic non-ferrous metals and their characteristics are described below. copper is a reddish-brown, tough metal. it has very high electric conductivity and high corrosion-resistant qualities. copper is used for making electrical contacts and wires, pipes, telephone cables, tanks, water heaters, etc. zinc is a hard, brittle, bluish-white metal that is employed in the pure form as sheet zinc. lead is a very heavy bluish-grey metal which is very soft. this metal is highly resistant to corrosion, but its strength is so low that it must be supported by a core of some other metal. lead is used for lining pipes, acid tanks and coating electrical cables. aluminium is a soft, silvery white metal. it is light weight, has high corrosion-resistant qualities and is used for automobile and airplane parts as well as for making different light-weight objects used in everyday life such as: frames, cooking utensils, chairs, etc.

Цветные металлы стоят дороже, чем черные металлы и используются только тогда, когда некоторые характерные не черных металлов необходимо или желательно в применении. эти характеристики являются высокая электро-и теплопроводность , высокую коррозионную стойкость , немагнитный качества , легкий вес, и т.д. металлов наиболее часто используется, чтобы сделать цветного литья металла медь, олово , цинк, свинец , никель, золото , алюминий. некоторые из основных цветных металлов и их характеристики описаны ниже. медь является красновато-коричневые , жесткий металл. она имеет высокую электропроводность и высокую коррозионно-стойких качеств. медь используется для изготовления электрических контактов и проводов , трубы, телефонные кабели , емкости , водонагреватели и т.д. цинк является твердый, хрупкий, голубовато -белый металл , который используется в чистом виде, как цинкового листа . свинец является тяжелый голубовато- серого металла, который мягкий . этот металл обладает высокой устойчивостью к коррозии, но его сила настолько мала, что она должна поддерживаться наоснове некоторых других металлов . свинец используется для футеровки труб, резервуаров и кислоты покрытия электрических кабелей. алюминий мягкий, серебристо-белый металл. это легкий вес , обладает высокой коррозийной устойчивостью качества и используется для автомобиля и самолета частей, а также для изготовления различных легких предметов, используемых в повседневной жизни, такие как : рамки, кухонную утварь , стулья и т.д.

My ideal school is new and i like it very much. i would like to describe my favourite place at school - our classroom. it is not very big but it is very light because there are three big windows in it. there are blinds on the windows, so when the sun shines we can still see what is written on the blackboard. there is an air conditioner in the class, so when it is hot outside, it is still confortable inside. there is a tv set with dvd player in the class, so we can watch some educational films all together.

The ideal school is a school of my dreams ! it is such a school = where teachers and students together is the place where you are respected and considered with any your argue = to prove the they teach and learn ! -with pleasure! where there is peace,goodwill and love ! where you are valued and are proud of you ! where i want to learn to not only know ,but also because just a shame not to know where you believe ! in the school of my dreams = many colors, there will be many animal and will be singing birds ! there is light and comfortable ! the ideal school is a school of free choice, when each the student may choose classes in which he is interested, which are important to him personally. the ideal school should provide children the right to choose subjects, teachers, and individual pace. in an ideal school education should be a large good family. in one class of children of different ages learn together, help each other, and the teacher, as a mom or dad helps when needed, supports, cares about his students.this is the school where the teacher would understand that in every conflict in the first place, he is guilty. in this school, the schedule should be based on children's interests. teachers in this school have to remember that they come to school for children, and not vice versa. the school where all the teachers about this, remember, is probably school is a beautiful, well furnished, with equipped gym. teachers need to be friends with each other to invite children to visit. in high school you need to give the right of choice of class, and first class can be allowed to choose those whose parents want to allow children free choice. teachers should not be pets, all they should be treated equally. that is the perfect school !