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4. Insert the correct word from the active vocabulary.

1. The examples of the fourth ... of computers in our country are ES-1065, NAIRI-4, ISKRA-1256, etc. 2. Microfloppy disks are from 3 to 4 inches in ... . 3. One of the characteristics of the fifth generation computer will be its high .... 4. In our Hindu-Arabic system we use only ten ... to represent any number. 5. In the example like a+bxc we must perform ... after ... . 6. In 1950 the Ukrainian Academy of Sciences ... the first electronic digital computer in the Soviet Union. 7. The famous Russian scientist M. V. Lomonosov ... a lot of calculating tables and several computing devices. 8. H. Aiken began to work at his Mark 2 computer in 1945 and ... it in 1947. 9. Ch. Babbage wanted to build a computer ... to hold a thousand numbers. 10. One of the methods to input data into a computer is via a ... card. 11. My younger sister likes arithmetic and can ... quite well. 12. The primary memory ... of the personal computer is 64 kilobytes or more.

5. Test your knowledge. Choose the correct variant.

1) Мы используем Past Simple когда говорим

  1. о чем-то, что происходит в момент говорения;

  2. о действии в прошлом;

  3. о привычном, повторяющемся действии.

2) Past Simple образуется с помощью

  1. окончания –ed;

  2. окончания –ed для правильных глаголов или вторая форма неправильных глаголов;

  3. окончания –ed для правильных глаголов или третья форма неправильных глаголов.

3) Для вопросов и отрицаний мы употребляем вспомогательный глагол

  1. did;

  2. has/have;

  3. was/were.

4) Временными указателями для Past Simple являются

  1. usually, often, always, seldom, sometimes;

  2. tomorrow, next week, in a few days;

  3. yesterday, last year, a week ago.

5) Страдательный залог в Past Simple образуется с помощью

  1. was/ were и третьей формы глагола;

  2. was/ were и второй формы глагола;

  3. have/ has и третьей формы глагола.

6. Study this chart and make sentences about Alice and you.

Example 1: a) Alice attended classes in programming the day before yesterday.

b) I …

When did you …?

Alice

You

1. go to the library

two weeks ago

?

2. attend classes in programming

the day before yesterday

?

3. use the Internet

yesterday

?

4. work at the Internet centre

last week

?

Example 2: a) Alice didn’t study a programming language yesterday.

b) I …

What did/didn’t you do yesterday?

Alice

You

1. test computer programs

+

?

2. study a programming language

-

?

3. play computer games

+

?

4. work on a computer

+

?