Задание № 32. Прочитайте текст.

Yellow and brown diamond are good only for industrial purposes and cost much cheaper than the white and blue ones. But with the coming of nuclear age, the colour of the diamonds can be changed by radiation from a nuclear reactor.

A nuclear reactor emits neutrons which give diamonds a greenish colour. Beta rays produced by a cyclotron colour the diamonds blue. In both cases the colour the diamonds blue. In both cases the colour changes as a results of the impact of the atomic particles on the diamonds structure. The radiated diamonds do not become radio-active and can be worn safely.

ответьте на во Задание №33. Прочитайте текст и найдите соответствующий перевод подчеркнутого грамматического явления.

Cars and airplanes can be very fast. Ships in the ocean are slower. Why is that? Mostly, it is because of the resistance of the water. Water is much more difficult to go through than air.

One idea was to design the hull (sides of a ship) to rise higher out of the water as the ship went faster. This was tried, but the ship could not go fast enough to make a smooth ride. It was finally decided that the whole ship must rise out of the water.

a) сконструировать

b) чертеж

c) замышлять

d) дизайн

Задание 34. Прочитайте текст.

Iodine, a steel-gray solid, readily vaporizes when heated. The vapor is violet in colour. If the vapor is allowed to cool, it passes directly back into the soled state. This process of passing from the solid state without the formation of a liquid is called sublimation. If a saturated solution of potassium nitrate is heated and the allowed to cool, crystals of the substance form on the bottom of the vessel. These are formed by precipitation, which takes place during the cooling process.

Закончите предложение: Iodine readily vaporizes …

a) during the cooling process

b) it is allowed to cool

c) when heated

d) when precipitation takes place.

Задание №35. Выберите слово которое не относится к теме “Substances”:

a) liquid b) solid c) gas d) postcard

Задание №36. Дополните диалог:

Alice: Paul, take that pipe,1. It is rather light. Paul: 2! It is very light. What material is it made off? Alice: It is made of plastic. Paul: 3? Alice: Well, it is a rigid material, but it is less flexible than rubber.4, it is it is lightest and the least expensive material. Укажите порядковый номер для всех вариантов ответов: a) Oh b) In fact c) please d) Why is it made of plasti

pagan1977sanyap0apdo    1   24.05.2020 15:56    2