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22.09.2022 08:02

Английский язык

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Part I
Из четырех вариантов выберите единственный правильный.
1. Last week they … a part in the competition.
a. taked b. had taken c. took d. take
2. What … at 2 o’clock yesterday?
a. are you doing b. were you doing c. was you doing d. did you do
3. Next week his family … to the island.
a. will fly b. shall fly c. flies d. will be flying
4. You read this book last month, …?
a. didn’t you b. don’t you c. haven’t you d. hadn’t you
5. The work … by 3 o’clock today
a. has been finished b. have been finished c. have finished d. are finishing
6. The new concert hall … now in our street.
a. built b. was being built c. is being built d. is building
7. The doctor says you … stay at home for a day or two.
a. can b. may c. must d. should
8. If we had received a letter from him, we … at all.
a. worry b. shall worry c. should have worried d. should worry
9. My sister’s hairs are … than mine.
a. short b. shorter c. more short d. the most short
10. You have … smile in the class.
a. beautifuller b. more beautiful c. the beautifullest d. the most beautiful
Part II
Ознакомьтесь с текстом и выполните задания ниже.
Metals, alloys and their use
Man uses metals still much today because of their valuable properties. The
main advantage of metals is their strength and toughness.
Plastics are lighter and more corrosion-resistant, but they are not usually as
strong as metals. Another problem with plastics is what to do with them after use.
Metals can be recycled but plastics can only be burned.
Not all metals are strong. Cooper and aluminium are metals, but if they are
mixed together, the result is an alloy called aluminium bronze which is much
stronger than either pure cooper or pure aluminium.
Alloying is an important method of obtaining required properties such as
strength, toughness, resistance to wear, magnetic properties, high electrical
resistance or corrosion resistance.
The properties of all metals can be further improved by use of heat
treatment. Heat treatment is a number of different procedures in which the
properties of metals and alloy to a selected temperature below its melting point and
then cooling it at a certain rate to obtain those properties which are required. For
example, hardening is used to make metals harder. Tempering makes them softer
and less brittle. Annealing is carried out to make a metal soft so that it can be
machined more easily. In this way, metallic materials can be produced to meet
every kind of engineering specification and requirement.
1. Найдите в тексте сложноподчинённое предложение и переведите его.
2. Переделайте данное предложение из действительного залога в
страдательный:
Man uses metals still much today because of their valuable properties.
3. Найдите предложение с модальным глаголом и переведите его.
Part III
1.Explain the meaning of the word “annealing”.
2.What’s the main idea of the text?