Вопрос № 284243 - Английский язык

Прочитайте текст и заполните пропуски подходящими по смыслу словами
A laser is a quantum electronic 1______________. It is a machine for making and concentrating light 2______________ into a very intense beam. The letters LASER stand for Light Amplification by Stimulated Emission of Radiation. The light 3______________ by a laser is much more intense than ordinary light. With ordinary light, all the light waves are of 4_____________ lengths. With lasers, all the light waves are of the same length, and this increases the intensity.

Прочитайте текст и заполните пропуски подходящими по смыслу словами
The laser beam is 1_____________ by exciting the atoms of a suitable material - ruby is one - until most of the atoms have electrons orbiting in a higher energy level than usual. The excitation is then stopped and all the excited electrons fall back together, to their 2______________ orbits, each one emitting a pulse of light of the same energy. In this way an intense beam of light is generated for a very short time. And every pulse or wave-train in this beam is in step with every other3______________. In this way a beam of light is obtained which is both monochromatic and coherent and easy to focus. This light is reflected by the mirror at one end of the tube. It can only escape at the other 4______________ of the tube.

Прочитайте текст и заполните пропуски подходящими по смыслу словами
The two 1 _______ groups are animal fats and vegetable oils. Butter is a special
2 _______ product from milk. The vegetable 3 _______ are pressed or extracted from a variety of plant seeds. Of primary importance as sources of edible oils are
4 _______, sunflower, cotton seed, corn germ, olives, etc.

Прочитайте текст и заполните пропуски подходящими по смыслу словами
Eggs are versatile, easy to use, easy to digest and most people like them. Store them in a cool place, larder or refrigerator. Brown or white eggs? The answer is that it does not matter, the 1______ is only in the eye of the 2_______. In America they pay extra for 3________ white ones, the British do the same for dark brown. Boil them, 4________ them, fry them with bacon, make an omelet, make mayonnaise.

Прочитайте текст и заполните пропуски подходящими по смыслу словами
For many centuries the only method of 1_______ fruit eatable between one harvest and the next was drying. The fruit, whole or cut in 2_______ was dried on trays in the sun. Today this 3_______ is still used in regions with good climates. Other methods were invented as early as the 1st century A.D, when 4_______ were put in the oven to dry and now there are modern dries with hot air circulated by machinery.

Прочитайте текст и заполните пропуски подходящими по смыслу словами
It’s Saturday 1 _______ and you are at the shops with your friends. You’ve been     2 _______ all morning and you’re starving! But where are you going to eat? There’s a good chance that you’ll go to a 3 _______ restaurant like Pizza Hut, Burger King or Wendy’s. The biggest problem is 4 _______ one because there are so many.