Waterproof, 17 – equal, 18 – ideal, 19 – to compare, 20 – friction.

V. Укажите номера предложений, в которых слова в форме

Отвечают на вопрос “что делая?”

Possessing great energy and ambition he became a famous scientist.

Bodies possesing potential energy can do work.

The students are measuring the temperature of the liquid.

Measuring the velocity of the body he made a mistake.

Destroying old buildings the workers discovered a lot of antique coins.

Destroying old buildings is not a simple matter.

While carrying out the experiment they faced an unexpected problem.

Ther were carrying out the experiment when she entered the lab.

Training qualified specialists universities provide them with good

Knowledge.

Текст

Прочитайте текст и выполните задания к нему.

Britain is in the middle of a serious crisis. We are desperately in need of a

New form of energy which will be capable of generating enough power to see

the country's homes, businesses and industries into the twenty – first century.

At the moment, more than 90% of Britain's energy needs are met by

Burning fossil fuels or generated in nuclear power stations. Unfortunately, those

are not renewable sources of energy, and once they are exhausted, that's all.

Moreover, they emit detrimental gases, which contribute to global warming and

Climate changes.

How they can we produce enough energy to power an entire country

Without damaging the environment? What can we use as an alternative reliable

Form of energy, which will generate as much power as fossil fuels and nuclear

Energy, but have none of the drawbacks? As people are increasingly coming to

realize, the answer is all around us. It's wind power.

Wind power is an alternative energy source which has been used for many

years in countries like Holland and Denmark. In fact today it is the world's

Fastest-growing source of energy. Strangely enough, even though it is one of the

Windiest countries in Europe, Britain has been slow to take advantage of wind

power. The strong winds blowing around Britain's coastline could easily be used

To provide us with all our power needs. All we need to do is build some wind

Farms.

Wind farms are actually arrays of electricity – generating wind turbines,

Which are tall, slim towers with two or three rotor blades at the top. The wind

Turns the blades, which spin a pole. This pole is connected to a generator, where

The electricity is made. There can be as few as one and as many as thousands of

Wind turbines in a single array. Computers monitor the wind direction and

Speed, and can shut down the turbines if the wind becomes too strong.

What is more, wind turbines make hardly any noise and they are not

Unpleasant to look at. Although wind farms do ake up a lot of place, they are

Often located on unoccupied sites or in areas that can also be used for farming.

Building wind farms at sea is also possible. In fact, the stronger winds generated at

Sea make offshore wind farms a practical alternative. Offshore wind farms also

Mean that much larger turbines can be built without objections from the public.

A single wind turbine can produce enough electricity to power 375 homes

And these wind farms are already making a small but signifcant difference. At

The moment there are only around sixty wind farms in Britain both on land and

Offshore. As this number increases, we may well see wind power supplying as

much as 10% of world's electricity demands and up to 20% of Britain's total.

So, why delay? Wind power offers a solution to all our energy problems by

Being a renewable, clean and safe source of energy which is easy to live and

Work with and which can help us protect our environment for future generations.

I. Найдите неправильное утверждение.

1. More than 90% of Britain's energy needs are met by burning fossil fuels.