V. Прочитайте запитання до тексту. З приведених варіантів відповідей визначте літеру речення, яка містить правильну відповідь на поставлені запитання.

1) What for can man use radioactive substances found in rocks?

a) …to illuminate clock dials;

b) …to find out the age of rocks;

c) …to treat diseases.

2) What for can cobalt-60 be used?

a) …for treating cancer;

b) …for treating pneumonia;

c) …for treating tonsillitis.

3) Where can radioisotopes be incorporated?

a) … in wires and pipes;

b) …in railway parts;

c) …in tyres and engine parts.

Варіант 3

I. Перепишіть. Письмово перекладіть українською або російською мовою наступні речення. Пам’ятайте, що об’єктний та суб’єктний інфінітивні звороти відповідають підрядним реченням. (див. зразок виконання 1.)

1. The input and output units are known to be the parts of a computer.

2. We expect the scientists to obtain many useful data.

3. The teacher observed the students make experiments.

4. Mathematical methods were sure to penetrate deeply into different sciences.

5. These are the main subjects to be discussed at the conference.

6. The choice of radioisotope is determined by the thickness of the product to be measured.

II. Перепишіть і письмово перекладіть українською або російською мовою наступні речення. Зверніть увагу на переклад залежного та незалежного дієприкметникових зворотів (див. зразок виконання 2).

1. Electrons moving through a wire, electrical energy is generated.

2. A procedure is the sequence of steps required to solve a problem.

3. Having been insulated the wire may be used as a conductor.

4. The instruments working on board the satellites are very reliable.

5. The equipment having been received, we began the experiments from the beginning.

6. The electrons move with different speed, their speed depending on the temperature and nature of the material.

III. Перепишіть та письмово перекладіть українською або російською мовою наступні речення. Зверніть увагу на переклад умовних речень (див. зразок виконання 3).

1. If they had known, they would have sent us all the necessary data.

2. If they finish their experiments, they will tabulate the data.

3. It the Earth didn’t rotate, one side would always have day and the other side would always have night.

IV. Прочитайте та усно перекладіть українською або російською мовою 1, 2 абзаци тексту. Перепишіть та письмово перекладіть 3 абзац тексту.

Пояснення до тексту

decay – розпад

non-renewable – той, що не відновлюється

dam – перегороджувати дамбою

free – вивільнювати

What is Energy

1. Everything in the universe is either energy or matter. For us humans, energy is the means for doing work. Picking up a book, watching TV or launching a space ship - all needs energy. Energy comes from only two sources: the Sun and the decay of radioactive elements inside the Earth. The Sun radiates its warmth out to all the planets, but ours happens to be about the right distance away to be able to support Life. But what about oil, gas or coal, which also come from inside the Earth? These are called 'fossil fuels' or 'non-renewable' energy sources.

2. Energy is the power that we use to do things, whether it is thinking about building a ship or actually building it.. But we have to convert most energy into another form to make it work for us. A fast-flowing river is full of energy we can't use. If you dam it and install turbines, you get electricity. Coal is just black rock with one odd property ... it burns. If you burn it, you can warm your home, cook food or raise steam in a boiler - to make electricity.

3. Life needs energy. Life's energy exists as long as there is sunshine. Plants can convert it and store it for their next generation. Animals eat the plants or each other, die and decompose, freeing nutrients for plants again. Then we got clever and discovered that we could use energy not only from our own muscles to do work for us. First we discovered that wind could drive our ships and water could power our mills. Later, we found that coal could make heat and steam for machinery. Then came oil and gas and nuclear power. We need them to satisfy our appetite for being comfortable and doing things with as little effort as possible.