2020-04-07
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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 № 5
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.
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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 № 6
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.
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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
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 №7
I.Read and translate the text.
SOME WORDS ABOUT METALLURGY
1. Metallurgy is one of the oldest of arts but one of the youngest of sciences. 2. Many of our metals were known in ancient times.3.It is only within the last century or two that the knowledge of the properties of the metals has made it possible to apply them in any extended way for industrial purposes.4. With the development of physics of metals, metallography, theory of heat treatment, and other phases of the science of metals, the field of metallurgy has broadened.
5. Metallurgy in this broader sense falls into three divisions: chemical or extractive, physical and mechanical. 6. Chemical metallurgy includes the metallurgical processes involving chemical change and the methods of production and refining.7. Physical metallurgy deals with the nature, structure, and physical properties of metals and alloys.8.Mechanical metallurgy includes the processes of working and shaping metals — processes which do not. involve chemical changes.
