EXERCISE 4 Вставьте артикли, где это необходимо:

… tooth consists of a crown and one or more roots. … crown is …visible part, … root is … hidden part.

… tooth is composed of enamel, dentine, cementum and pulp.

Enamel is … hardest substance in the body.

Cementum is … outer covering of …root.

Dentine occupies … interior of the crown and root.

… vessels and … nerves of the pulp enter … root apex through the apical foramen.

… space occupied by the pulp is called … pulp chamber.

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Questions: 
1. The weather in England is very changeable, isn't it? Yes, it is.
2. What comparison do the English use when they want to describe a person whose mood and opinion changes very often? The English use the comparison "as changeable as the weather" of a person who often changes his mood or opinion about something. 3. What statement is often made by the English to describe the meteorological conditions of their country? This statement "Other countries have a climate; in England we have weather" is often made by the English to describe the meteorological conditions of their country. 

4. How often does it rain in England? It often rains in England. The English have three variants of weather: when it rains in the morning, when it rains in the afternoon, or when it rains all day long. 
5. The weather is the favourite conversational topic in England, isn't it? Yes, it is. Do you find this topic of conversation interesting? No, I do not.
6. What is the best time of the year in England? The best time of the year in England is spring.
7. What do you know about London fogs? The most unpleasant aspects of the weather in England are fog and smog.
8. What kind of weather do you like best of all? I like sunny weather.
9. Where do you get the weather forecast from? I get the weather forecast from the Internet. Do you always believe it? No, I do not.

Russia is the largest country in the world. it borders 18 other countries. moscow is the capital of russia. this city plays a significant role in the country’s life. saint petersburg is the second largest city. people of different nationalities live on the territory of russia. russian is the state language. however, there are a lot of people speaking various dialects. approximately half of the territory of the country is covered with forests. its flora and fauna are quite diverse. russia is agricultural and industrial country. russia has a developed economy with enormous natural resources, particularly natural gas and oil. russia is one of the leading countries in the space industry. russia is the country with great cultural heritage. there are historic and cultural monuments nearly in every city and town. россия является самой крупной страной в мире. она граничит с 18 другими странами. москва – столица россии. этот город играет значимую роль в жизни страны. санкт-петербург является вторым крупнейшим городом. на территории россии проживают различные национальности. является государственным языком. кроме того, есть много людей, которые говорят на различных диалектах. примерно половина территории страны покрыта лесами. животный и растительный миры достаточно разнообразны. россия является аграрно-индустриальной страной. в россии развитая с богатыми природными ресурсами, страна особенно богата природным газом и нефтью. россия является одной из ведущих стран в космической промышленности. россия – страна с богатым культурным наследием. и культурные памятники есть практически в каждом городе.