2 Complete the sentences with will and won't and the verb in brackets.
You
won't lose (not lose) the match
tomorrow. You 'll win (win)!
1 Sholpan
(love) this film.
She
(not think) it's boring.
2 In 2040 children
(learn)
Mandarin. They
(not study)
English
3 I think
(be) a teacher
1
(not become) a doctor.
4 People
(not go) to a
different planet in the next millennium.
They
(live) here.
5 I'm pretty sure that we
(visit) New York next year. But we
(not stay) in a hotel.​

решение. 1. ri=2*r; rii=r/2; ri/rii=4; не надо ни о какой площади сечения говорить. два куска проволоки содинили последовательно, получили ri=2*r; два куска той же проволоки соединили параллельно, получили rii=r/2; ну, а теперь раздели первое на второе!

а теперь общий случай: ri=r*n; rii=r/n; ri/rii=n^2; кусок проволоки разрезали на n одинаковых кусков. сначала эти куски соединяют последовательно: ri=r*n; затем соединяют параллельно rii=r/n; ну и дели первое на второе и делай выводы.

1. I′ve got a lot of relatives. 2. They′ve got meat for dinner today. 3. She′s got two brothers. 4. We′ve got a guest today. 5. He′s got a family of four. 6. She′s got a new dress. 7. I′ve got a lot of English books. 8. He′s got a dog.

1. Has he got a car? 2. Have they got a house? 3. Has she got children? 4. Have you got brothers? 5. Has he got a new job? 6. Has she got a lot of friends? 7. Have they got a camera? 8. Have you got fish soup for dinner today?

1. I haven’t got a family. 2. She hasn′t got children. 3. He hasn′t got a car. 4. They haven′t got a house. 5. You haven′t got French books. 6. I haven’t got a brother. 7. My friend hasn′t got relatives in Moscow. 8. She hasn′t got friends.