Номер 3, страница 32, часть 2 - гдз по английскому языку 9 класс учебник Афанасьева, Михеева

Часть 2. Unit 3. Science and technology. Step 6 - номер 3, страница 32.

Условие.

3 A. Read the texts about some well-known inventions and match them with their names.

Inventions

a) It is an instrument used to collect light from an object, to bring the light to a focus and produce an image, and make that image look larger. There are three kinds of these devices: refractors2 which use lenses, refractors which use mirrors3 and those which use a combination of lenses and mirrors.

1) the laser

2) the optical telescope

3) the clock

4) the turning lathe

5) the computer

b) It is a device that generates “well-organized” light. The mechanism uses a process known as stimulated emission. It generates electromagnetic radiation in a special microwave region. Nowadays these devices are widely used in different ways, among which is medicine. It is often used to make quick and painless operations.

c) It is a machine tool that takes away unwanted material from a work piece by rotating1 it against a cutting tool. It is the oldest and probably the most important machine tool. Early wood-turning tools powered by foot were used in the Middle Ages. Modern models work at a very high speed and have a lot of functions.

d) This device is based on a microprocessor, a small chip that performs the operation of a central processing unit. The early kinds of these machines had a rather small memory, typically in the 16–64 kilobyte range. Modern models have memories in the megabyte to gigabyte range, which is a great improvement.

e) This is a mechanical, electrical or atomic device that measures the passage of time. Mechanical models date from the late Middle Ages. All mechanical models must have a source of energy — for example, a falling weight or a wound spring2. All such models must be carefully regulated to make them run accurately. The energy turns a system of wheels that move the hands.

B. In the text there may be words that are new to you. What are the words? What helped you to understand what they mean?

Решение 1.

Решение 2.

Решение 3.

A. Прочитайте тексты о некоторых известных изобретениях и соотнесите их с названиями.

B. В тексте могут быть новые для вас слова. Что это за слова? Что помогло вам понять их значение?

Ответ:

A.

a) - 2) the optical telescope

b) - 1) the laser

c) - 4) the turning lathe

d) - 5) the computer

e) - 3) the clock

--- Перевод ---

A.

a) - 2) оптический телескоп

b) - 1) лазер

c) - 4) токарный станок

d) - 5) компьютер

e) - 3) часы

B.

Some words were new to me, for example, refractor and stimulated emission. The text itself helped me to understand them. It explained that a refractor is a type of telescope that uses lenses. For "stimulated emission," the text connected it to the laser and the process of creating "well-organized" light, which made its meaning clearer from the context.

--- Перевод ---

Некоторые слова были для меня новыми, например, рефрактор и вынужденное излучение (stimulated emission). Сам текст помог мне их понять. В нём объяснялось, что рефрактор — это тип телескопа, который использует линзы. Что касается «вынужденного излучения», текст связал это понятие с лазером и процессом создания «хорошо организованного» света, что прояснило его значение из контекста.