Вариант 4

1. В каком из следующих слов звук, передаваемый "ir", отличается от остальных?

1) first, 2) fire, 3) birth, 4) girl, 5) bird, 6) shirt, 7) skirt.

2. Укажите, в каком предложении глагол стоит в Past Perfect:

a) She has bought a new pair of shoes.

b) She has a lot of different shoes at home.

c) She had bought a pair of new shoes for yesterday's party.

d) She is going to buy a pair of new shoes for the party.

e) She had new shoes on at the party.

3. Выберите правильную форму глагола:

1) The rain... before we reached home.

a) stopped

b) had stopped

2) The taxi... by 5 o'clock.

a) arrived

b) had arrived

4. Выберите правильную форму глагола:

1) I... not... your book today.

a) have brought

b) had brought

2)... you ... the dinner by the time the guests came?

a) have cooked

b) had cooked

5. Выберите правильный вспомогательный глагол:

1) ... the delegation visit your school?

a) did

b) has

c) had

2) … I help you?

a) has

b) have

c) shall

3) I … not seen you for ages.

a) has

b) have

c) shall

6.Выберите правильный модальный глагол:

1) The sky is dark. It…rain soon.

a)may

b)should

c)has to

2) The lights are on. They…be at home.

a)may

b)must

c)are to

3) You…to come here again.

a) must

b) should

c)have

7. Укажите предложения, в которых "have" является вспомогательным глаголом:

1) Have you worked all day?

2) Have a good time!

3) They have never met before.

4) She has a lot of animals at home.

8. Соедините правильно две половины в одно предложение:

1) She plays tennis... 2) She is playing tennis... 3) She has played tennis... 4) She played tennis... 5) She will play tennis...

1) ... at this moment. 2) ... an hour ago. 3) ... every Monday. 4) ... next Monday. 5) ... for two hours.

9. Какой вопрос относится к подчеркнутому слову?

Mary loves Nick, her neighbour.

a) Who loves Nick?

b) Whom does Mary love?

c) What is Nick?

d) Why does Mary love Nick?

10. Соотнесите предложения с русским вариантом:

1)

a) I read this book easily without a dictionary.

2. The book is easily read without a dictionary.

a) Книга легко читается без словаре

b) Я легко читаю эту книгу без словаря.

2)

a) A lot of new houses are built in our district every year.

b) They build a lot of new houses every year.

a) В нашем районе каждый год строится много домов.

b) Они строят в нашем районе каждый год много домов.

11. Прочитайте и письменно переведите текст:

METALWORKING AND METAL PROPETIES

An important feature of hot working is that it provides the improvement of mechanical properties of metals. Hot-working (hot-rolling or hot-forging) eliminates porosity, directionality, and segregation that are usually present in metals. Hot-worked products have better ductility and toughness than the unworked casting. During the forging of a bar, the grains of the metal become greatly elongated in the direction of flow. As a result, the toughness of the metal is greatly improved in this direction and weakened in directions transverse to the flow. Good forging makes the flow lines in the finished part oriented so as to lie in the direction of maximum stress when the part is placed in service.

The ability of a metal to resist thinning and fracture during cold-working operations plays an important role in alloy selection. In operations that involve stretching, the best alloys are those which grow stronger with strain (are strain hardening) — for example, the copper-zinc alloy, brass, used for cartridges and the aluminum-magnesium alloys in beverage cans, which exhibit greater strain hardening.

Fracture of the workpiece during forming can result from inner flaws in the metal. These flaws often consist of nonmetallic inclusions such as oxides or sulfides that are trapped in the metal during refining. Such inclusions can be avoided by proper manufacturing procedures.

The ability of different metals to undergo strain varies. The change of the shape after one forming operation is often limited by the tensile ductility of the metal. Metals such as copper and aluminum are more ductile in such operations than other metals.

Ответьте на вопросы к тексту:

1. What process improves the mechanical properties of metals?

2. What new properties have hot-worked products?

3. How does the forging of a bar affect the grains of the metal? What is the result of this?

4. How are the flow lines in the forged metal oriented and how does it affect the strength of the forged part?

5. What are the best strain-hardening alloys? Where can we use them?

6. What are the inner flaws in the metal?

7. Can a metal fracture because of the inner flaw?

8. What limits the change of the shape during forming operations?

Составьте словарь профессиональных терминов (15 слов и выражений)