Английский язык: рекомендуемые темы для сочинений с элементами рассуждений и аргументации. Гришин В.А. - 21 стр.

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promised annual funding to help support its programs. Last year, however, private

contributions to the Symphony increased by 200 percent, and attendance at the

Symphony's concerts-in-the-park series doubled. The Symphony has also announced an

increase in ticket prices for next year. Such developments indicate that the Symphony

can now succeed without funding from city government and we can eliminate that

expense from next year's budget. This action will surely prevent a budget deficit."

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49) Yellow-legged frogs were once common in high-altitude lakes in the Sierra Nevada

mountains, but they have become increasingly rare. Trout feed on tadpoles and young

frogs. Few lakes in the Sierra Nevada had any trout in them until a hundred years ago.

At that time, many lakes were stocked with trout for recreational fishing, and now trout

are common in virtually all bodies of water in the Sierra Nevada. Researchers removed

the trout from one lake, and the frog population soon quadrupled. Since frogs are

capable of moving several miles over land, removing trout from just a few lakes is

clearly the way to restore the frog population to its former levels.

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50) Studies show that in 70 percent of traffic accidents, at least one driver involved is

less than 10 miles from home when the accident occurs. This statistic indicates that

drivers have a tendency to drive incautiously when they are close to home, probably

because familiar surroundings give them a false sense of security. Thus, the places

where people feel safest are the places where they are in fact at greatest risk of serious

injury.

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51) Copper occurs in nature mixed with other minerals and valuable metals in ore, and

the proportion of copper in the ore can vary considerably. Until fairly recently, the only

way to extract pure copper from ore was by using a process that requires large amounts

of electric energy, especially if the proportion of copper in the ore is low. New copper-

extracting technologies can use up to 40 percent less electricity than the older method to