A hollow container with a particular shape into which a liquid substance is pourdered to set into th...: ответ на тест 860549 - Английский язык

Расположите пропущенные предложения в таком порядке, чтобы получился связный текст
Smart – or shape memory – materials are an invention that has changed the world of engineering.1___________. The metal alloys were made first and they are usually an expensive mixture of titanium and nickel.
2_______:
- plastics that return to their original shape when the temperature changes.
One use is in surgery where plastic threads ‘remember’ the shape of a knot, react to the patient’s body temperature and make themselves into stitches.
- 3____________. They are used in medical implants that are compressed so they can be put inside the patient’s body through a small cut. The implant then expands back to its original shape.
- 4___________.

Расположите пропущенные предложения в таком порядке, чтобы получился связный текст
1___________. There are two types: metal alloys and plastic polymers. The metal alloys were made first and they are usually an expensive mixture of titanium and nickel.
2_______:
- plastics that return to their original shape when the temperature changes.
One use is in surgery where plastic threads ‘remember’ the shape of a knot, react to the patient’s body temperature and make themselves into stitches.
- metal alloys  that have a ‘memory’ and can return to their original shape.
 3____________. The implant then expands back to its original shape.
- 4___________.

A material that allows electricity to pass through is called …

The activation of goal-oriented behavior is …

The type of psychologists who study how people influence one another, especially in groups is called …

Electric waves of very high frequency are radio …