Укажите предложения, в которых «one» является неопределенно-личным местоимением (таких предложений должно быть 5).

1. An atom may get one or more electrons.
2. There are many composite materials from which one may choose.
3. The difference between an elementary system and a complex one lies in the difficulty of the task to be performed.
4. To understand what a laser is, one has to understand how light is generated.
5. The use of a computer permits one to make calculations rapidly.
6. One of the numerous disadvantages was high price.
7. One should say that development of vacuum tubes was the beginning of electronics.
8. A force may be defined as the action of one body on another body.
9. It is necessary that these devices be separated from one another.
10. This device allows one to measure distance.

My Favourite SubjectМой любимый школьный предметMy name is Svetlana. I’m fifteen years old. I study in the ninth grade of a secondary school. We study lots of subjects at school, such as Maths, Geography, Biology and many others. I think all these subjects are interesting and useful, however, I’ve always preferred Humanities. I particularly like foreign languages and my favourite subject is English. There are several reasons for that. First of all, English is the most popular language in the world nowadays. Moreover, it’s the international computer language, which, to my mind, is very important. Secondly, English is a very melodic language and has a long history. Many traditions of English people are reflected in their language. I think that studying a foreign language allows to learn more about the country, its culture and history, its people and their lifestyles. Such knowledge broadens your mind and makes tolerant towards other people and nations. Our English lessons are always varied and exciting. Although there are sometimes difficult tasks, such as doing grammar exercises, writing essays, learning large texts, the majority of activities are very interesting. We sometimes learn English proverbs, songs, poetry and even play games. After all, school is not the only place where I learn English. I take every opportunity to improve my knowledge at home or with my friends. We often watch films and programmes in English, or read authentic books and magazines. Internet also offers many interactive ways to learn foreign languages nowadays, so I believe that learning English can become real fun!

 Hello, Jake. Thanks for your letter! As soon as I have received it I start writing to you. Our teachers also discuss the issues of choosing our future job in thelessons. As for me  I am interested in a job of lawyer, because it is interesting and I like helping people. I agree with that we have to choose our future occupation according to our likes and dislikes. And  we also must take into consideration our personal qualities. For example, if you don’t like children you’d better stop thinking about becoming a teacher. By the way, Why are you  going to take a gap year before going to the university? What are you going to do?  Are you going to travel?
Best regards, (твое имя и твоя фамилия)