Перевести aiming to get higher profits, firm obtain each output level as cheaply as possible. firms choose the optimal output level to receive the highest profits. this decision can be described in terms of marginal cost and marginal revenue. marginal cost is the increase in total cost when one additional unit of output is produced. marginal revenue is the corresponding change in total revenue from selling one more unit of output.

Стремясь  получить большие прибыли,  фирма  пытается получить  каждый выходной уровень  как  можно  дешевле. фирмы  выбирают оптимальный выходной уровень , чтобы получить высокие прибыли.  данное  решение  может быть описано в терминах предельных издержках и предельного дохода. предельные  издержки  - это прирост  общих затрат  прниодной дополнительной еденицы продукции. предельный  доход  -  это соответствующие изменения в общий доход от продажи  одной  еденицы продукции.

1. is there .a.. way to do it quickly?

2. will you agree to .any.. changes in the schedule?

3. if you have ..an. idea of where to reach him, please let us know.

4. the lecture gave us some interesting facts about air pollution on the planet.

5. are you sure you don't want .a.. soft drink?

6. can you show me any different styles of shirts?

7. do you have .any.. new information about this problem?

8. what kind of motel do you have in mind will do as long as it is near the park entrance,

9. do you have ..any. books on english history?

10. fix me a drink please with .some .. orange juice in it.

11. i'd like to look at ..some   of your new car models.

12. are there .any.. articles on this topic in to​

Winter holidays are shorter than summer ones. They begin at the end of December and last about two weeks. It is so nice to have a rest from school.

During winter holidays we celebrate the New Year’s Eve and Christmas. There are New Year parties for children at schools and theatres. Cinemas show children films and cartoons.

It is usually very cold in winter, but frost and snow can’t keep children indoors. It’s so great to go skiing down a hill. Boys like to play hockey on the ice. Many children go to the skating-rinks to skate. Small children play snowballs and make snowmen, or ride on the sledges happily.

When the weather is bad, I stay at home and watch TV. There is always something interesting on during winter holidays. Sometimes my friends come to see me and we play computer games or listen to music. There is also more time for reading, drawing, making model planes and other hobbies.

Holidays pass quickly and soon it’s time to go to school again.