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Какие организмы первыми на Земле стали вырабатывать кислород в процессе фотосинтеза?
1)
грибы
2)
вирусы
3)
цианобактерии
4)
простейшие
Ответы 1
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3- цианобактерии, второе название сине-зеленые водоросли
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Автор:
talonswg2 - 6 лет назад
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0
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помогите, пожалуйста)) №2 Put the verbs in brackets into Past Simple or Past Continuous
It was late on Friday afternoon Mr. Brown 1. __________________ (walk) home from work. There was a big lorry outside his block of flats. “Somebody is moving”, he 2. ______________ (think). He 3. __________________ (stand) outside the front door when he 4. __________________ (see) two men at the door. They 5. _________________ (carry) a huge TV. Mr. Brown 6. _________________ (hold) the door open for them, they 7. __________________ (thank) him and they 8. ____________________ (load) the TV to the lorry. Then, Mr. Brown 9. _____________________ (go) upstairs to his flat on the second floor. He 10. ___________________ (look) for his keys when he 11. __________________ (realize) his door was open. He 12. __________________ (remember) the two men with the TV and he nearly 13. _______________ (faint)! The two men 14. _______________ were thieves and the TV they 15. ________________ (carry) was his TV!-
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1Just as Bob ...the street .a car came round the corner
a crossed
b was crossing
2 While I ...about my next actions somebody knocked
a thought
b was thinking
3 Then I ...a man standing nearby the shop
a saw
b was seeing
4 Something very strange ...to me on my way home
a happened
b was happening
5 When I got up that morning the sun ,,,brightly
a shone
b was shining
6 Somebody stole the money from Dad's pocket while he ...
a slept
b was sleeping
7 It was getting dark when we ...the native city
a reached
b were reaching
8 While he ...for me he was reading the article in the magazine
a waited
b was waiting
9 He couldn't speak because he....of laughter
a died
b was dying
10 I looked at Mary who still ...from cold
a shivered
b was shivering
11 They....while they were discussing their plans
a were guarrelling
b guarreled
12 I was hurrying to my work when i ...my old friend
a met
b was meeting
13 They ...at the table when i began to tell this story
a sat
b were sitting
14 While i ...through all the newspapers and didn't know what to do
a looked
b was looking
15 He ...into the room and saw the father there
a came
b was coming
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