Преодолевая горку, лыжник поднимался 1,5 км со скоростью 5,4 км/ч, а спускался 1 км со скоростью 10 м/с. Какова его средняя скорость при движении по горке?

Choose the right variant and write it down.
1. If I knew French very well,
a) I would go to France for holidays.

2. If you were good at English, 
b) you could work as an interpreter (переводчик) in summer.

3. If you studied in Australia,
b) you might be a student of "Schools of the Air".

4. If I were on holiday now,
c) I would be somewhere at the seaside.

1. If I knew French very well, I would go to France for holidays.
ответ: a

2. If you were good at English, you could work as an interpreter in summer.
ответ: b

3. If you studied in Atustralia, you might be a student of "Schools of the Air".
ответ: b

4.  If I were on holiday now, I would be somewhere at the seaside.
ответ: c