Https://www.plae.tv/watch/eTjfgvOyv9ls9bU
https://www.plae.tv/watch/3SGJUxHMOBZ2EZY

1. A computer is a machine with an intricate network of electronic circuits that operate switches or magnetize tiny metal cores.
2. The switches, like the cores, are capable of being in one or two possible states, that is, on or off; magnetized or demagnetized.
3. The machine is capable of storing and manipulating numbers, letters, and characters (symbols).
4. The basic idea of a computer is that we can make the machine do what we want by inputting signals that turn certain switches on and turn others off, or magnetize or do not magnetize the cores.
5. The basic job of computers is processing of information. For this reason computers can be defined as devices which accept information in the form of instructions, called a program, and characters, called data, perform mathematical and / or logical operations on the information, and then supply results of these operations.
6. The program, or part of it, which tells the computers what to do and the data, which provide the information needed to solve the problem, are kept inside the computer in a place called memory.
7. The program, or part of it, which tells the computers what to do and the data, which provide the information needed to solve the problem, are kept inside the computer in a place called memory.

1. Her eyes are red?

b) Has she been crying

2. "How many exams?" "I think, five".

b) has he passed

3. More and more forests because of fires.

a) are disappearing

4 faster than sound?

a) Does light travel

5. The lesson at 8:45.

a) doesn't finish

6. The museum a large collection of paintings.

b) owns

7. It seems people new things about nature.

a) are always discovering

8. What's the matter? Why at me like that?

a) are you looking

9. Please, be quite. You so much noise.

b) are making

10. It is clear to me that his time for action

a) has come

11. How long on this problem so far?

b) have you been working

12. It is 5 o'clock now. My brother for his History class and I a com

a) is preparing, am writin

13. No matter how long the holiday is I I want a few days more.

b) always feel