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1. Camels used to be the only form of transportation in the desert. 
2. The camels used to be called the "ships of the desert".
3. Because it was unsafe for the pilots as they had to to sit or lie on the wings in the open air and also the plane engines sometimes could suddenly stop when the plane was in the middle of a trip. Additionally, in cold weather the wings frequently became icy which could result in a plane crash.
4. No, they didn't.  It was impossible to fly in bad weather.
5. Yes, they are. Further improvements have made air travels safe and comfortable.

1) What is software?

Software is programs for directing the operation of a computer or electronic data.

2) In what two basic groups software (programs) could be divided?

These two groups are system software and application software.

3) What is system software for?

System software controls standard internal computer activities.

4) What is an operating system — system or application software?

An operating system is a collection of system programs.

5) What is a «driver»?

Drivers coordinate peripheral hardware and computer activities.

6) What is application software?

Application software is designed to perform a group of coordinated functions, tasks, or activities.

7) What are application programmes for?

They are used for specific tasks.

8) What is the tendency in application software market in recent years?

Programmers nowadays tend to include as much as possible in one program to make software interface look more attractive to the user.

9) What is the application of the communication software?

Communication software transfers data from one computer system to another.