выберите правильный ответ.В ЧЕМ ЗАКЛЮЧАЕТСЯ СУЩНОСТЬ ЭКОЛОГИЧЕСКОЙ ПИРАМИДЫ?

1)масса продуцентов в 10 раз больше массы консументов

2)каждая из цепей пищевой цепи имеет массу в 10 раз меньше предыдущей 

3)количество биомассы в эксистеме в 10 раз больше ,чем масса травоядных животных

A. Complete the sentences with the following words

successful, solve, burglars, quiet, suddenly, tiring, scared, obey, a hammer and nails, bushes, isolated, extinct, creating, crowded, reserve, convenient

1. I don't mind the peace and __________ of  the country, but I can't stand feeling __________ .

2. __________ public transport and __________ streets are very important to me.

3. The __________ are stealing things from people's houses.

4. Edinburg Castle is built on an __________ volcano.

5. The children were scared when they heard the noise coming from the  __________ .

6. Penny was and the zoo and __________ she hears people screaming.

7. She can __________  the most mysterious crimes and put criminals behind bars.

8. How was your flight? - It was __________ .

9. I'm __________ of spiders.

10. She's a __________ designer. She succeeds in making her own clothes and jewellers.

11. I'd like to __________ a place at your camp.

12. Swimming in the pool can be great but also very dangerous, so you must __________ the lifeguards.

13. Plushenko E. is the most __________ figure skater in Russia.

14. We are using __________ to build nesting boxes.

B. Choose the correct form

  1. You __________ leave expensive items in your car for all to see.

a. can't             b. shouldn't

 2. I __________  watch cartoons when I was six.

 a. used to        b. was used to

3. I __________  drive a car when I was six.

a. wasn't use to               b. didn't use to

  4. They decided to search for treasures __________ they found a map.

a. until                       b. as soon as

  5. This is the house __________ he was born.

a. which                  b. where

  6. I have __________ seen this film twice. Let's  watch something else.

a. never                   b. already

  7. You __________ to send a deposit  in order to reserve your place.

a. must                     b. need

8. She has known him __________ 1996.

a. since                    b. from

9. He has been an actor __________ twenty years.

a. last                   b. for

 10. I haven't finished my project __________ .

a. just                     b. yet

11. It's the __________ film I've ever seen.

a. funniest                  b. funnier

12. Hvorostovsky D. is one of the __________ opera singer.

a. most talented          b. more talented

13. He __________ go tho school. He's ill.

a. mustn't                    b. doesn't have to

14. You __________ do it tonight. It's urgent.

a. has to                        b. have to

15. She can't drive, __________?

a. isn't she                     b. can she

16. He didn't go to the party yesterday, __________?

a. didn't he                     b. did he

C. Put the verbs in brackets into the correct form

1. Why __________ (he\arrive) so late last Monday?

2. __________ (you/ever/explore) a haunted mansion?

3. My parents __________ (cook) breakfast while I __________ (tidy) my room.

4. I _________ (take) the plane tomorrow morning.

5. Few minutes later he __________ (decide) to call the police and report about the incident.

6. If you _________ (study) hard, you __________ (pass) your exams successfully.

7. Mark __________ (listen) to music until 11 pm last night.

8. I'm sure our life __________ (be) very different in 2050.

9. Liza __________ (watch) TV when her father arrived.

10. If I __________ (go) to Spain, I __________ (take) lots of amazing photos.

11. She __________ (work) as a teacher for ten years.

12. Unless Jim pay the electricity bill, it __________ (get) cut off.

13. Max __________ (read) a newspaper when he __________ a loud noise in the garden.

14. __________ (people\live) in underwater cities?

15. I __________ (learn) English since 1998.

16.If the weather __________ (be) good, we __________ (go) for a walk.

17. If people__________ (invent) new fuel, cars __________ (not\pollute) the air.

D. Fill in the following sentences

behind, off (2), of, with, into, for, forward to, up, out of, back, across, out, away, out with, after

1. If a burglar breaks in, don't put a fight and never run __________ him.

2. He gave __________ smoking last year.

3. My alarm clock went __________ at 7 o'clock.

4. They came __________ this antique book at the market yesterday.

5. He had to stay in hospital for several weeks, so he fell __________ with his lesson.

6. Our teacher was very proud __________ her students.

7. We ran __________ bread, so we went to buy some.

8. She is looking __________ her holidays. She is going to spend this summer in Italy.  

9. He can't cope __________ his problems alone. I suppose he needs psychologist's help and support of his relatives.

10. The new hit of Rolling Stones is coming __________ next week.

11.Suddenly I ran __________ my old friend in the street.

12. It's hot! Take __________ your jumper.

13. She is looking __________ a well-paid job in the city, as there is a high level of unemployment in the country.

14. She has fallen __________ Max because he lied to her.

15. Can you give me __________ my book, please?

16. A burger and fries to take __________ , please.

Высота 7 маленьких кубиков составляет 75% высоты 4 больших кубиков. Какова высота 1 маленького кубика если 1 большого кубика 0.98дм?

Впиши свои примеры, соответствующие указаниям, данным в каждой строке.

1. Имя существительное 1-го склонения мужского рода в форме предложного падежа.

2. Имя существительное 2-го склонения мужского рода в форме творительного падежа.

3. Имя существительное 2-го склонения среднего родав форме предложного падежа.

4. Имя существительное 3-го склонения в форме дательного падежа.

5. Имя существительное 1-го склонения женского рода в форме родительного падежа.

6. Имя существительное женского рода на -ИЯ в форме дательного падежа.

очень надо! Пожалуйста!

Какую силу испытывает каждый квадратный сантиметр площади поверхности водолазного костюма при погружении в морскую воду на глубину 10 м. Плотность морской воды 1030 кг/м^3