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XIX. In passage 1 find the definition of a communications channel and its main features.

XX. Look through passage 2 and explain the difference between twisted-pair and coaxial cable.

XXI. Read passage 3 and name the advantages of fiber-optic cable as compared to copper cable.

XXII. Read the second sentence of passage 4 and divide it into sense groups. Define the dependency relations between them.

XXIII. Say whether the following statements are true (T) or false (F). Correct the false ones.

1. Twisted-pair wire is used only for transmitting voice messages.

2. Coaxial cables are more susceptible to electromagnetic interference.

3. Fiber-optic cables are used to transmit data in the form of electric pulses.

4. Wireless communication is greatly influenced by obstacles, so microwave signals need amplification.

XXIV. Translate passage 4 into Russian.

Предлоги

Предлоги, указывающие на местоположение

Предлоги, указывающие на время

Запомните значение следующих предлогов

FOR

ДЛЯ

BY

(ЧЕМ)

WITH

С

WITHOUT

БЕЗ

AS

КАК

OF

(ЧЕГО, КОГО)

ON = UPON

НА

I. Define the meaning of the prepositions choosing the correct variant.

1. toward:

a) от

b) по направлению к

с) через

d) между

e) без

2. out of:

a) на

b) среди

c) изнутри

d) под

e) над

3. down:

a) из

b) в течение

c) вверх

d) вниз

e) около

4. through:

a) вдоль

b) через

c) между

d) от

e) до

5. from:

a) после

b) над

с) среди

d) на

e) от

6. up:

a) ниже

b) вверх

c) под

d) внутрь

e) поперек

7. around:

a) сверху

b) в

c) вокруг

d) ниже

e) через все

8. between:

a) под

b) в течение

c) до

d) между

e) позади

II. In each line find prepositions of place and give their Russian equivalents.

1. a) till

b) near

c) out of

d) from

e) between

f) at

2. a) among

b) since

c) before

d) up

e) throughout

f) under

3. a) from

b) to

c) behind

d) after

e) within

f) till

4. a) during

b) through

c) above

d) into

e) at

f) toward

5. a) within

b) after

c) across

d) over

e) down

f) to

6. a) against

b) before

c) at

d) off

e) without

f) for

7. a) by

b) for

c) below

d) on

e) out of

f) with

8. a) since

b) along

c) of

d) for

e) through

f) in