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1. Answer the following questions.

1. What elements is coal made of? 2. What does the word metamorphosis mean? 3. How much carbon is there in anthracite? 4. Which way is coal converted into electricity? 5. How much of world’s electricity does coal produce? 6. What are bad effects of coal mining and the subsequent burning of coal?

2. Give synonyms to the following words from the text:

eventually, to feature, different, emission, shiny, to contain, total, to undergo, shape, to spin, a lump of, to contaminate.

9. Silver

precious

дорогоцінний

to fluctuate

коливатись

utensils

посуд, приладдя

dramatically

значно

dentistry

лікування зубів

as of (date)

станом на (дата)

sterling

встановленої проби

to rhyme

римуватись

an alloy

сплав

angst

страх, тривога

Silver is a precious metal that has had a number of different uses over the years, including jewelry, coins, silverware, electronics and photography. It is a chemical element whose chemical symbol is Ag and atomic number is 47. Silver is a soft, shiny metal that is a good conductor of electricity. Fine pieces of jewelry, coins, utensils and various pieces of art are made of silver. In modern times it is also used in dentistry, electronics, photography, mirrors and in a number of industrial applications that make use of its unique properties.

You may have heard of the term sterling sliver, this is the name given to an alloy (combination of metals) that is at least 92.5% silver by weight. The other 7.5% is made up of other metals, usually copper. Silver is found naturally by itself, as an alloy with gold or in an ore (a rock containing various metals and elements). Silver is often found in copper and lead ores. The price of silver has fluctuated dramatically over the last century, climbing as demand increases but dropping when large silver deposits are found. As of November 2009, gold was valued at around 65 times the value of silver by mass.

The word silver is one of the few words in the English language that is nearly impossible to rhyme. Words such as orange, purple, breadth, wolf, depth, angst, gulf, ninth and twelfth are also difficult or impossible to rhyme. While there are some words that do actually rhyme with these examples they are usually very rare or hardly used in the modern English language.

Speech patterns

may (might, must) have + V-III

припущення щодо дії, що вже відбулась

You must have heard the news.

Ви, напевно, вже чули новину.

do + V (у ствердних реченнях)

має емфатичне значення

I do want to visit this beautiful city.

Я дійсно хочу відвідати це прекрасне місто.

He does study hard.

Він дійсно вчиться старанно.

This is hardly possible.

Це навряд чи можливо.

This money was earned hardly.

Ці гроші були зароблені важкою працею.

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