По . № 11. установите соответствие между названием вещества и реагентами, с которыми это вещество может взаимодействовать: 1) mg 2) feo 3) ba(oh)2 а) co2, na2so4 б) naoh, so3 в) h2o, hcl г ) h 2 so 4 , co
Many wildlife habitats will be destroyed if man keeps polluting the environment. 2. If we dump all sorts of chemicals into rivers, we will not be able to swim in them in the future. 3. If we do not stop cutting down so many trees, we will endanger our oxygen supply. 4. Soon the Earth’s resources will be exhausted if the human population continues to grow. 5. If everybody continues to use aerosols and CFCs, the hole in the ozone layer will get bigger. 6. If the sun radiation can’t escape into space, Earth’s temperature will increase steadily. 7. If the global temperature rises, sea levels will rise too. 8. We’ll threaten our own existence if we do not cut down on waste rapidly. 9. People will run out of drinking water one day if they do not use it more rationally. 10. If he wants to help the planet, then he has to change his habits
i go to bed at 10 o'clock every day
i went to bed at 10 o'clock yesterday
i'll go to bed at 10 o'clock tomorrow
i do not go to the cinema every day
i did not go to the cinema yesterday
i will not go to the cinema tomorrow
do you watch tv every day?
did you watch tv yesterday?
will you watch tv tomorrow?
when you leave home for school every day?
when you left home for school yesterday?
when will you leave home for school tomorrow?
my brother goes to work every day.
he leaves home at a quarter past eight.
the office where he works is near our house, he walks there.
he not takes a bus.
yesterday he did not go to work.
yesterday he got up at nine o'clock.
you had a pt lesson yesterday? — no, i'm not
what did you buy at the shop yester¬day? — i bought a book.
yesterday my father not read newspapers because he was very busy. he will read newspapers tomorrow.
2. If we dump all sorts of chemicals into rivers, we will not be able to swim in them in the future.
3. If we do not stop cutting down so many trees, we will endanger our oxygen supply.
4. Soon the Earth’s resources will be exhausted if the human population continues to grow.
5. If everybody continues to use aerosols and CFCs, the hole in the ozone layer will get bigger.
6. If the sun radiation can’t escape into space, Earth’s temperature will increase steadily.
7. If the global temperature rises, sea levels will rise too.
8. We’ll threaten our own existence if we do not cut down on waste rapidly.
9. People will run out of drinking water one day if they do not use it more rationally.
10. If he wants to help the planet, then he has to change his habits