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IV. Read and translate the words paying attention to the word-building element. Whether “en” is used at the beginning or at the end of a word, the meaning is the same

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  1. B). Open the brackets. c). Put questions to the underlined words.
  2. Comment on some of Twain’s remarks when describing the quality of student papers. Explain why the commentary is so biting. Translate the sentences into Russian.
  3. Complete the sentences, using the words from Ex. 3. Three of them are used twice. The first one is done for you.
  4. Complete these sentences using the correct form of one of the words above. Make sentences of your own to show that you understand the difference in their meaning.
  5. Complete these sentences using the correct form of one of the words above. Make your own sentences to show that you understand the difference in their meaning.
  6. CONTEXT: FUNCTION AND MEANING
  7. D) Choose one of the words to complete the sentences
  8. Do you know what gift you will have absolutely avoid if your work in China? What is the meaning of the word “clock” in Chinese?
  9. Encircle the Participles, mark the Present Participle with “Pres.” and Past Participle with “Past” and translate the sentences into Russian.
  10. Ex.10. Write the appropriate word or phrase in the following spaces. Translate the sentences into Ukrainian.
  11. Ex.2. Complete these sentences using the correct form to express future meaning of the verbs in brackets.
  12. Ex.2. Some words change their stress when they change their part of speech. Underline the stressed syllable in these words.

1. rich – enrich circle – encircle

able – enable large – enlarge

danger – endanger sure – ensure

close – enclose

 

2. black – blacken moist – moisten

dark – darken thick – thicken

hard – harden deep – deepen

long – lengthen soft – soften

 

V. Match the synonyms:

a) basic, rate, occur, container, damage, flammable, generate

b) vessel, produce, main, destruction, ignitable, speed, happen.

VI. Match the equivalents:

a) confined, excessive, expose, evaporate, volatile, detonate, explosion

b) to explode with sudden violence or great noise, to change from liquid to vapour, easily vaporized or evaporated, to subject to an action or influence,

a sudden and violent bursting, exceeding the usual, restricted.

 

VII. Choose the correct words and translate the sentences:

a) to cause b) a cause c) to be caused

 

1. The most common … of gas fires is a leak in the gas system.

2. Very often gas fires … by a malfunctioning control.

3. A common malfunction of the valve … by setting a wrong material in the valve.

4. This … the components to be separated.

5. Heat … the substances to expand.

6. Explosions may … by an external source of energy such as heat.

7. When a valve surfaces become dry it … a valve breakage.

8. The sudden increase in pressure … the container to explode.

 

 

VIII. Choose the correct words and translate the sentences:

a) quantity c) explosion e) generate g) involving

b) detonation d) decompose f) involve

 

1. A type of explosion characterized by a much-increased reaction rate as well as a high pressure rise is called ….

2. An atomic bomb can cause a huge….

3. The water was … into hydrogen and oxygen.

4. The sun generates great … of heat and light.

5. High velocity explosions usually … a chemical reaction.

6. Gas explosion … methane, natural gas, propane or butane are characterized with low velocity explosions.

7. The explosion … a wind in the mine shaft because the air is pushed ahead of the flame.

 

IX. Write explanations in answer to the following questions. Choose between because and because of / owing to.

Example: Why do matches ignite when rubbed?

 

  because of  
Matches ignite when rubbed –   friction.
  owing to  

– because friction produces heat.

Note: Do not repeat the noun after because; use a pronoun (it/they).

Example: Wood floats on water because it is less dense than water.

 

Questions Reasons/Causes

1. Why do matches ignite when rubbed? a) Wood is less dense than water.

2. Why does water enter a pump? b) chemical reaction gets out of

control

3. Why do flammable liquids explode? c) gravity

4. Why do hydrogen balloons rise in air? d) a dust concentration exceeds a

lower explosive limits

5. Why does a dust explosion occur? e) Friction produces heat

6. Why do objects fall to the ground? f) Flammable liquids are very

volatile.

7. Why does a chemical explosion occur? g) Air is denser than hydrogen.

8. Why does wood float on water? h) a difference in air pressure

9.Why does alcohol makes your hand feel i)Alcohol evaporates quickly,

cold? absorbing heat from hand.


X. Read and translate general and particular statements.


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