2020-04-07
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1. When was iron first used? 2. Whom was known the art of making weapons from iron to? 3. What are the chief ores of the metal? 4. Where does iron occur? 5. What is called the ore? 6. What is a mineral?
III. Translate the words.
making weapons, widely distributed, nature, occur, plants
IV.Make them negative and interrogative.
These workers are usually paid monthly. 2. This city was heavily bombed in the war. 3. The new computer system will be installed soon. 4. He was interrupted by the ringing of the telephone. 5. Each candidate is questioned in turn.
Министерство образования и науки Донецкой Народной Республики
Государственное профессиональное образовательное учреждение
«Харцызский технологический техникум» государственного образовательного учреждения высшего профессионального образования «Государственное высшее учебное заведение «Донецкий национальный технический университет»
Дисциплина- «Иностранный язык»
Variant №2
I.Read and translate the text.
PROPERTIES OF METALS
1. The metals resemble one another in their general chemical behaviour with other substances, but they differ markedly in activity.2. The uses to which metals are put are based upon their physical or chemical properties.
3. The metals vary greatly in density. 4. The lightest is lithium, which has the density of 0.534 and is, therefore, about one-half as heavy as water.5.The heaviest is osmium (D. 22.48) which is closely related to platinum (D. 21.45) in physical and chemical properties. 6.The so-called light metals, of which sodium, potassium, magnesium and aluminium are examples, have a density less than 4;7. Iron, lead, tin, silver, etc. are known as heavy metals.
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8.The metals also vary in hardness, from potassium, which can be molded like wax, to chromium, which will cut glass. 9.The metals and other substances differ in the extent to which they can resist a strain that tends to bring about a permanent change in their form.
П. Answer the questions to the text.
1. Do the metals resemble one another?
2. What do they differ in?
3. What is the lightest metal?
4. What is the heaviest metal?
5. Is it closely related to platinum?
III. Translate the words.
Resemble, substances, physical or chemical properties, density, heavy
Resemble, chemical behavior, substances, physical or chemical properties, density
IV. Write the plural of the following nouns.
1. church – 8. woman –
3. mouse – 9. leaf –
5. child – 10. potato –
6. roof –
7. boy –
Министерство образования и науки Донецкой Народной Республики
Государственное профессиональное образовательное учреждение
«Харцызский технологический техникум» государственного образовательного учреждения высшего профессионального образования «Государственное высшее учебное заведение «Донецкий национальный технический университет»
Дисциплина- «Иностранный язык»
Variant № 3
I.Read and translate the text.
1. The metals also vary in hardness, from potassium, which can be molded like wax, to chromium, which will cut glass. 2. The metals and other substances differ in the extent to which they can resist a strain that tends to bring about a permanent change in their form. 3. All substances offer more or less resistance to the flow of an electric current through them. 4. With any given substance, the resistance is determined by its dimensions and the temperature.5..The solids obtained when two or more metals are mixed in the molten condition and allowed to solidify are called alloys. 6. Each constituent of an alloy is called a component. 7.Alloys may be binary (two-component), ternary (three-component), etc. 8..The ability of various metals to form alloys differs greatly.
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П. Answer the questions to the text.
1. How do metals vary?
2. What metal can be molded like wax?
3. The metals and other substances differ in the extent to which they can resist a strain don’t they?
4. What is called alloy?
5.Do the ability of various metals to form alloys differs greatly?
III. Translate the words.
Hardness, vary, substances, a permanent change, resistance
IV. Вставьте вместо точек do или does.
1. … you sleep well? Yes, I….
2. … your sister wash the plates? Yes, she ….
3. What … the teacher ask you to do?
4. … Kitty read English books? Yes, she ….
5. He … not like porridge.
6. We … not go to school in summer.
Министерство образования и науки Донецкой Народной Республики
Государственное профессиональное образовательное учреждение
«Харцызский технологический техникум» государственного образовательного учреждения высшего профессионального образования «Государственное высшее учебное заведение «Донецкий национальный технический университет»
Дисциплина- «Иностранный язык»
Variant № 4
I.Read and translate the text.
ALUMINIUM
1.Aluminium, whichis sometimes called aluminum.2. It is the typical metal in the third group in the periodic classification of the elements. 3. Aluminium is the most abundantof the metals and the most widely distributed.4. It is found in feldspars, micas, kaolin, clay, bauxite, cryolite, alunite, corundum and certain gems.5. Compounds of aluminium have been known for many years and they were recognized as being derived from a metal that hadnot beenisolated.6.Aluminium has a very low density; 2.7; 7.It is used in construction when a metal is required and weight is an important consideration. 8.It is ductile, malleable, and can be rolled.
9.Its tensile strength is low in comparison with that of iron;10. It cannot be machined and polished readily and does not yield good castings. 11.These defects can be overcome by alloying it with other metals.
П. Answer the questions to the text.
1. Is aluminium the typical metal in the third group in the periodic classification of the elements?
2What metal is the most abundantof the metals and the most widely distributed?
3. Where is it found?
4. Aluminium has a very low density, doesn’t it?
5.Can it be machined and polished readily?
III. Translate the words.
the most abundant, widely distributed, feldspars, micas, is used, ductile, malleable
