Лексический разбор двух предложений просто подчеркнуть основные составляющие и написать что это 1. it is the incompatibility of operating system that causes problems. 2. but the scientist did believe that this kind of computers could enhance the human experience.

ответ:it- noun

Is- verb

Imcontability- adverb

Of- preposition

Operating- adjective

System- noun

That- preposition

Causes- verb

Problems- noun

But- preposition

Sientiests- noun

Did believe- verb

That, this- preposition

Kind of computers- noun

Could exhance- verb

The human- noun

Experience- noun

Объяснение:

It was Saturday night and Pete sat watching TV. People were being killed for an hour on the screen. Policemen were shot in the line of duty, gangsters were thrown off roofs, and an elderly lady slowly was poisoned for her pearls, and her murderer was brought to justice by a cigarette company after long discussions which were held in the office of a private detective. Villains holding guns were leapt at by brave, unarmed actors, and were saved from deaths by the quick-thinking young men.
Страдательный залог отмечен жирным шрифтом.

If I had a chose, I would most likely live in a big modern city. It's populated streets and moderness gives it charm. It feels great to live in a huge city, you never feel alone! And there is always so much to do, so many things to see, you just can't get bored. Of course though there are down sides to living in the city. Some of them are that there is much more pollution, especially compared to the country side. During the summer in big cities it can get overwhelmingly hot, and in result many citizens can get heat stroke. There is also the increase in diseases, such as lung disease, which is due to the fact that there are a lot of smokers in the city. The city can also be stressful. 
But nonetheless, I still would enjoy living in one! :