Question

Помогите)))) 2,3 упражнение

Answer 1

Задание 2.
1. Does heat travel easily through some materials?
2. Whom did he meet when he went to the scintific conference?
3. Why can we add these fractions? (ответа на этот вопрос из предложенного предложения получить невозможно)
4. Who was the first man to invent radio? Who invents radio? 
5. How shall we make the experiment?

Задание 2. 

1. They have been practiced differential equations before they proceeded to the new material.

2. We have been studying ratio problems this week.

3. When the experiment had been finished, the engineers left the laboratory

4 In the future scientists will be solving new important problems in mathematics

5. In the 19*century scientists were able to establish experimentally the atomic theory of the structure of mater.