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Без построения графика функции, определи в каких четвертях расположен график функции y=2,6x2.
(Четверти запиши арабскими цифрами)
Ответ:
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Ответы 1
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1 и 2 четверть это парабола ветки которой направлены вверх
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Автор:
phoebevilla - 6 лет назад
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PART I. USE OF ENGLISH (GRAMMAR/VOCABULARY)
Task 1. Choose the word with the same or similar meaning (4 points).
1. foggy a) rainy b) stormy c) misty
2. a disaster a ) t o b e in trouble b) trouble c) luck
3. to damage a ) t o b e in trouble b) to be out of luck c) to hurt
4. an exploration a) research b) an experiment c) an achievement
Task 2. Choose the word which best completes the sentence (4 points).
1. A terrible noise was coming … the ground.
a) with
b) in
c) from 2. Hurricanes often … massive floods.
a) break
b) take
c) bring
3. The great scientist did this research … this problem.
a ) o n
b) of
с) in 4. A rocket was … last week.
a) flown
b) launched
c ) t a k en
Task 3. The word in capitals in the right column can be used to form a word that fits suitably in the
blank space. Fill each blank in this way (3 points).
1. The kiwi is the … bird and emblem of New Zealand. NATION
2. A hot day in the afternoon or in the early evening is the most likely time for the …tornadoes. DANGER
3. It’s a … day, isn’t it? WONDER
Task 4. Complete the sentences. Be careful with grammar tenses (the past perfect and the past simple)
1. When Mary arrived at the airport, she saw that the plane … already (take off).
2. Yesterday he … (come) home at nine in the evening.
3. Nick … (play) golf yesterday, he … (never/ play) golf before.
Task 5. Choose the correct answer (4 points).
1. She … TV when my sister came home after work. (watched/ was watching/ had watched)
2. Where … you … this book? (did … buy/was … buying/ had … bought)
3. I … my homework by 7 o’clock. (did/ was doing/ had done)
4. We … very pleased to see Alice again at the party last Sunday. (were/ were being/ had been)
PART II. READING COMPREHENSION
Read an article about Antarctica in your Student’s Book (ex. 7 p. 39). For questions 1-3 choose an
answer (A, B, C or D) which you think fits best according to the text. (3 points)
1. What part of the Earth’s surface does Antarctica take up?
A. 1/5 B. 1/8 C. 1/10 D. 3/2
2. When is the lightest time in Antarctica?
A. In January B. In August C. In July D. In April
3. Why do the scientists have to use fridges to keep their samples warm?
A. because it is too cold outside B. because of constant darkness C. because of wild animals D. because it is too hot outside
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