of science. Task2 Choose the correct answers A, B or C. 6Heart rate is at the lowest level during: AThird Sleep stage B. Light Sleep stage; C. Rem Sleep; 7. Humans require at least: A. 5 hours of sleep; B8 hours; C. There is no set amount of time 8The reason we sleep AFor recuperation; B. saving the body energy; C. all answers are correct Task2 Grammar Choose the correct item: 9.I did my exam a little better/ a little well than last time. 10.The letter was/is brought in time yesterday. 11.I haven't still got the email from my friend. He must/may have sent to the wrong address. I am not sure. 12. The task was so complicated that the researcher decided to back out/ up it. 13.The warrior tried with all his efforts to keep/stay alive. 14. Psychologist/ geneticist helps person with his mental problems. 15. The teachers teach us to be honest/dishonest in writing tests. 16The students of the high schools are considered as well behaved/ well-behaved ones. 17.I wonder why Jack... (not/ attend) the essential seminar yesterday. 18.Because he... (catch a cold) by that time. 19.I wonder why... (you/ look) so upset20.Because my friends... (not, come) to my birthday party yet. 21.A falling apple may have helped Newton to come across with/up with his theory of gravity 22. Check your homework again, I am sure you have some observation/ misinformation there. 23. Luckily/ Unfortunately the meeting starts later. We have time. 24For this task, the teacher will separate/teach the girls from the boys.

Ответ:

6.C. Rem Sleep

7. B. 8 hours of sleep

8. C. all answers are correct

9. I did my exam a little better than last time

10. The letter was brought in on time yesterday

11. I still haven't received the email from my friend. He may have sent it to the wrong address. I am not sure.

12. The task was so complicated that the researcher decided to back out of it.

13. The warrior tried with all his efforts to stay alive.

14. A psychologist helps a person with his mental problems.

15. The teachers teach us to be honest in writing tests.

16. The students of the high schools are considered as well-behaved ones.

17. I wonder why Jack did not attend the essential seminar yesterday.

18. Because he had caught a cold by that time.

19. I wonder why you look so upset.

20. Because my friends have not come to my birthday party yet.

21. A falling apple may have helped Newton to come up with his theory of gravity.

22. Check your homework again, I am sure you have some misinformation there.

23. Unfortunately, the meeting starts later. We have time.

24. For this task, the teacher will separate the girls from the boys.

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Объяснение: