I. Choose the correct answer. Only one answer is correct.

1. Mrs. Anderson is angry because her daughter _______ to a stranger.

A) talking B) is talking

C) to talking D) to be talking

2. Since they ______ to New York he hasn’t spoken Russian.

A) went B) has gone

C) were going D) had gone

3. It is stupid ______ your homework.

A) not to do B) not doing

C) not do D) not to doing

4. I bought everything we need yesterday so I _____ go shopping today.

A) mustn’t B) don’t have to

C) haven’t D) don’t have

5. Will these clothes ______ by Saturday?

A) make B) made

C) be make D) be made

6. We ____ to come home earlier.

A) said him B) told him

C) said to D) told to him

7. There were ______ interesting people at the party last night.

A) any B) not

C) no D) every

8. Just look at _____ in the mirror, you’re so dirty!

A) your B) oneself

C) yours D) yourself

9. The _____ pens and pencils are on the desk.

A) children B) childrens

C) children’s D) childrens’

10. The mice ______ the cheese.

A) Have eaten B) have been eaten

C) has eaten D) has been eaten

11. ______ easy questions to answer.

A) This is not B) These is not

C) This are not D) These are not

12. How soon we’ll leave this place depends ______ the weather.

A) of B) on

C) for D) from

13. I don’t like using ______ phone, I prefer letters.

A) – B) the

C) a D) some

14. Manchester is using ______ city in the north of England.

A) – B) a

C) the

15. ______ knew what we were doing.

A) Neither man B) Neither men

C) Neither of man D) Neither of men

16. I’ll see you in _____ quarter of _____ hour.

A) - … - B) - … an

C) the … an D) a … -

E) a … an F) the … the

17. Nancy usually does her work very ____ and well, but today she seems a little preoccupied.

A) careful manner B) carefully

C) care D) careful

18. A) Have you been ever to the Planetarium?

B) Have ever you been to the Planetarium?

C) Have you been to the Planetarium ever?

D) Have you ever been to the Planetarium?

19. He made a silly mistake. It was very stupid _____ him.

A) about B) with

C) of D) to

20. This is the best film I have ______ seen.

A) still B) ever

C) never D) so far

II. Translate the technical text.

Not only did the copper cable itself have limitations, but things were done to this cable to make it even more unsuitable for high-speed data transmission. These actions primarily took two forms:

• loading- Load coils were frequently added to loops longer than 18,000 feet. These load coils were essentially low-pass filters. That is, they passed without attenuation all voice frequencies but effectively blocked

frequencies above the voice band. This is disastrous for data communications, which depend on high frequencies to achieve the desired speed of transmission.

• bridge taps- A bridge tap is any in terminated portion of a loop not in the direct talking path. A bridge tap may be a used cable pair connected I at an intermediate point or an extension beyond the customer. For example, a drop wire that provided a second line to a home is left in place even after the second set of customer premises equipment (CPE) is removed. Records of this were not always kept and assigning a particular copper pair to a high-speed data circuit is far from a sure thing. Bridge taps do nasty things to data transmission.

III. Write the annotation to the text.

PAPER 15

Date: 2015-12-18; view: 2208