Английский, вариант 1 (Prestressed Concrete)

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Variant 1.
TASK 1 Преобразуйте следующие предложения в форму множественного числа
1 This boy has a ball.
2 This animal is wild.
3 That lady is our teacher.
4 That goose is fat.
5 This pencil is in the box.

TASK 2 Перефразируйте, употребляя притяжательный падеж
1 The flat of my sister
2 The son of her mother
3 The friend of Susan
4 The parents of that boy
5 The hobby of these gentlemen

TASK 3 Вставьте артикль, где необходимо:
On Saturday we will go to … football match at … stadium in …centre of …city. There will be … lot of … people at … stadium. They will come because it will be … most important match of … year. At two o clock … teams will come on to … field and … match will begin.

TASK 4 Переведите на английский язык
1 Это длинная дорога.
2 Он самый лучший ученик.
3 Собака моего друга умнее, чем моя.
4 Майк выбрал самую трудную профессию.
5 Ник прочитал интересную книгу.

TASK 5 Заполните пропуски нужной формой глагола «to be»
1 He … born in 1984.
2 His name … Mike.
3 I … a first year student.
4 They … ill last week.
5 We … at home tomorrow.

TASK 6 Заполните пропуски нужной формой глагола «to have»
1 As a rule we … 4 lessons a day.
2 Last week my father … a lot of work.
3 Tomorrow student will … to live.
4 I … never been to Italy.
5 They … … a good rest next summer.

TASK 7 Преобразуйте данные предложения, употребляя оборот «there + be »
1 Our family has three children.
2 Some students were in the lab.
3 Our higher school has five faculties.
4 Many people will be at the stadium tomorrow.
5 Many large industrial enterprises are in the South now.

TASK 8 Прочитайте и переведите текст на русский язык
Prestressed Concrete
Prestressed concrete is not a new material. Its successful use has been developed rapidly during the last two decades chiefly because steel of а more suitable character has been produced.
Concrete is strong in compression but weak when used for tensile stresses.
If therefore, we consider a beam made of plain concrete, and spanning a certain distance, it will at once be realized that the beam´s own weight will cause the beam to sag or bend. This sagging at once puts the lower edge of the beam in tension, and if the cross-sectional area is small, causes it to break especially if the span is relatively large.
If, on the other hand, we use a beam of similar cross-section, but incorporate steel bars in the lower portion, the steel will resist the tensile stress derived fr om the sag of the beam, and thus assist in preventing it fr om breaking.
In prestressed concrete steel is not used as reinforcement, but as a means of producing a suitable compressive stress in the concrete. Therefore any beam (or member) made of prestressed concrete is permanently under compression, and is consequently devoid of cracks - under normal loading or so long as the "elastic lim it" is not exceeded.
Prestressed concrete is not only used for beams but is now employed extensively for columns, pipes, and cylindrical water-towers, storage tanks, etc.

Ответьте письменно на вопросы:
1 Why did the prestressed concrete develop rapidly during the last decades?
2 Why was it necessary to introduce steel into concrete?
3 When is the beam devoid of cracks?
4 Wh ere do we usually use prestressed concrete?


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