1. She is an intelligent girl, but she hadn't been reading a book since she left school. 2. I have bought an electronic organizer today, and I just am typing my personal data into it. 3. Her solo album has already sold a million copies. She is happy. 4. This doctor’s methods have shown good results recently. 5. So much had happened since I last saw you. 6. — Have you ever been in Norway? — Yes, I went there on business last year. 7. — Have you missed a lecture recently? — I missed one a week ago. 8. Success hasn't spoiled her. She simply becomes more sure of herself. (сомневаюсь) 9. I have had a video for some years but I don't manage to learn the instructions. 10. We haven't had fun for a long time. We had our last party a month ago. 11. — How long had Lucy have problems with her back? — It first started last year. 12. We had been engaged since we left high school. 13. — Are you always having a dog? — I have had it for the last six years. 14. — Guess what I decide to do! — I can’t guess. What? — I decided to start my own business. — When did you decide to do it? — I think about it just now. 15. It hasn't been raining here for a very long time. 16. Yesterday all your troubles seemed so far away. Today the thieves has taken your car away!
Решение. Разделим монеты на три группы: 9, 9 и 2 монеты. Первое взвешивание – сравниваем вес первых двух групп. Если они одинаковы, то фальшивая монета среди двух монет третьей группы, и мы вторым взвешиванием сравниваем их между собой. Та, которая легче, – фальшивая. Если в первом взвешивании одна из групп окажется легче, то фальшивая монета в ней. Делим эту группу на три группы по три монеты. Вторым взвешиванием устанавливаем, которая из этих трех групп легче, а третьим взвешиванием находим легкую монету в этой тройке.
Решение. Разделим монеты на три группы: 9, 9 и 2 монеты. Первое взвешивание – сравниваем вес первых двух групп. Если они одинаковы, то фальшивая монета среди двух монет третьей группы, и мы вторым взвешиванием сравниваем их между собой. Та, которая легче, – фальшивая. Если в первом взвешивании одна из групп окажется легче, то фальшивая монета в ней. Делим эту группу на три группы по три монеты. Вторым взвешиванием устанавливаем, которая из этих трех групп легче, а третьим взвешиванием находим легкую монету в этой тройке.
2. I have bought an electronic organizer today, and I just am typing my personal data into it.
3. Her solo album has already sold a million copies. She is happy.
4. This doctor’s methods have shown good results recently.
5. So much had happened since I last saw you.
6. — Have you ever been in Norway? — Yes, I went there on business last year.
7. — Have you missed a lecture recently? — I missed one a week ago.
8. Success hasn't spoiled her. She simply becomes more sure of herself. (сомневаюсь)
9. I have had a video for some years but I don't manage to learn the instructions.
10. We haven't had fun for a long time. We had our last party a month ago.
11. — How long had Lucy have problems with her back? — It first started last year.
12. We had been engaged since we left high school.
13. — Are you always having a dog? — I have had it for the last six years.
14. — Guess what I decide to do! — I can’t guess. What? — I decided to start my own business. — When did you decide to do it? — I think about it just now.
15. It hasn't been raining here for a very long time.
16. Yesterday all your troubles seemed so far away. Today the thieves has taken your car away!