3. Read the text again and answer the questions. 1 What is the basic classification of metals? 2 What are the characteristics of iron? 3 Why are alloys created? 4 Which materials are good insulators? 5 Is steel an alloy? Which metal does it contain?

Перевод задания: Прочитайте текст ещё раз и ответьте на вопросы.

1. What is the basic classification of metals? Metals are classified as ferrous and non-ferrous. (Металлы делятся на чёрные и цветные.)
2. What are the characteristics of iron? Iron is soft and pasty. (Железо мягкое и пластичное.)
3. Why are alloys created? Alloys are created to improve some properties of metals. (Сплавы создают, чтобы улучшить некоторые свойства металлов.)
4. Which materials are good insulators? Ceramic materials are good insulators. (Керамические материалы — хорошие изоляторы.)
5. Is steel an alloy? Which metal does it contain? Yes, steel is an alloy. It contains iron and a small amount of carbon. (Да, сталь — сплав. Она содержит железо и небольшое количество углерода.)