2020-04-07
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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 № 11
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
IV. Дополните предложения нужной формой глагола to be (am, is, are).
Frank and Martin … watching a TV show now.
Kelly … washing her dress in the bathroom.
Our teacher … writing something on the blackboard.
It … getting dark.
The birds … singing sweetly in the garden.
I … preparing for my report at the moment.
The children … decorating the hall for the party.
The wind … blowing now.
People … speaking quietly in the conference-hall.
You … waiting for the call.
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 № 12
I.Read and translate the text.
1.Copper was used in prehistoric times for making weapons and tools 2. Later it was alloyed with tin to form bronze, which was the most important metal of the Greeks and Romans.3 It was replaced for these purposes by iron and steel. 4. Various grades of copper are used for engineering purposes. 5. The great development of the electric industries has resulted in such extensive uses of the metal.6. It now ranks next to iron in importance.7. The copper alloys are more widely employed. 8. The alloying of copper with other elements increases the strength of the metal in some cases and improves the anticorrosive and antifriction properties in others.
9. Copper alloys comprise two main groups — brasses and bronzes. 10.Alloys of copper and zinc are called brasses. 11.Alloys of copper with a number of elements including tin, aluminium, manganese, iron and beryllium are called bronzes.
П. Answer the questions to the text.
1What was copper used in prehistoric times for?
2 Why was copper alloyed with tin?
3 Was bronze the most important metal of the Greeks and Romans.?
4 What was it replaced by?
5 Various grades of copper are used for engineering purposes aren’t they?
III. Translate the words.
Copper, was used,weapons,tools, alloys
IV.Write the plural of the following nouns.
1. church – 8. woman – 15. radio —
2. difficulty – 9. deer – 16. ox —
3. mouse – 10. leaf – 17. fish —
4. month – 11. goose – 18. wolf —
5. child – 12. potato – 19. country —
6. roof – 13. foot – 20. tooth —
7. boy – 14. dress – 21. curriculum
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 № 13
I.Read and translate the text.
1. Native Tin is not found in nature. 2.The first tin artifacts date back to 2000 B.C.,3. However, it was not until 1800 B.C. that tin smelting became common in western Asia.4. Tin was reduced by charcoal and at first was thought to be a form of lead. 5.The Romans referred to both tin and lead as plumbum where lead was plumbum nigrum and tin was plumbum candidum. 6.Tin was rarely used on its own. 7.It was most commonly alloyed to copper to form bronze. 8.The most common form of tin ore is the oxide casserite. 9.By 1400 BC. bronze was the predominant metal alloy. 10.Tin is highly malleable and ductile.11.Tin is highly crystalline and during deformation is subject to mechanical twinning
П. Answer the questions to the text.
1. Is native tin found in nature?
2. When do the first tin artifacts date back?
3. What do Romans thought about tin?
4. Where do we use tin?
5. Is it resistant to corrosion?
III. Translate the words.
Native, tin, is found, nature, tin artifacts, alloy
