PRESENT SIMPLE VS PRESENT CONTINUOUS EXERCISES 1. Put the verbs into the correct tense (present simple OR present continuous):
The train always
(1z leave) on time
"What's the matter? Why
(2: cry/you)?"
That's strange. They
(3: not to watch) TV
He
(4: not to speak) very good English.
Please be quiet!
(5: do) my homework.
Where
(6. live/they)?
Listen John
musici (7. play)
never
(8. go) to the swimming pool.
Harold Black's a famous pianist. He
_(9: give) two or three concerts
every week. He
(10: travel) a lot and this week he's in New York.
He
(11 stay) at an expensive hotel. He's at his hotel now.
He
(12: have) his breakfast in the dining-room
He
(13: drink) a cup of coffee and he
(14, read) a
newspaper. Harold's always very busy. He
(15: play) the piano
regularly. He
(16 practise) for four hours every day.
He
(17: go to bed late and he always
(18: get
up) early. But he sometimes
(19: get) dressed too quickly, and this
morning he
(20. wear) one blue sock and one red onel
1)Building materials are divided into natural (natural) and artificial(Строительные материалы разделяют на природные (естественные) и искусственные)
2)Не смогу сказать.
3)metals are divided into two groups: ferrous and non-ferrous(металлы делятся на две группы: черные и цветные)
4)Ferrous metals are those that contain steel and iron.Non-ferrous metals do not contain steel or iron. This group of metals includes: aluminum and copper, Nickel and lead, zinc and tin, brass and gold, silver and platinum, as well as many others that do not contain iron.(Чёрными называются те металлы, которые содержат сталь и железо.Цветные металлы не содержат стали и железа. К данной группе металлов относятся: алюминий и медь, никель и свинец, цинк и олово, латунь и золото, серебро и платина, а так же многие другие, не содержащие железо.)
1) The properties of building and materials are classified into four groups: physical, mechanical, chemical, technological, etc.
2) Resistance to salt aggression and other chemicals (wood)
An important advantage of natural stone is strength, durability, resistance to environmental influences, frost resistance (stone)
Strength; reliability; versatility; combination with other materials (metal)
3) All metals are divided into two groups: ferrous and non-ferrous
4) Ferrous metals and alloys contain iron, non-ferrous metals do not. Ferrous metals are mild steel, carbon steel, stainless steel, cast iron and wrought iron. ... Since they do not contain iron, non-ferrous metals have a higher resistance to corrosion and rust.
Объяснение: just decided