сделать правильно!! Очень нужно Ex. 1. Read the text, using the dictionary
EVOLUTION OF THE HEART
Beginning with the invertebrates, the lowest members of the animal kingdom, the heart is a simple propulsive muscular tube. In the fish the heart has evolved into a chambered organ with an atrium, or receiving chamber, and a ventricle, a thick-walled pumping chamber. This development was necessary because the vertebrates of which the fish are the lowest class have a more complicated structure and are generally larger than the invertebrates and require more oxygen. With the development of lungs in the higher vertebrates the atrium became divided into two parts by the formation of a dividing wall called septum.
Thus, in man and other animals with a four-chambered heart blood from the body cells enters the heart at the right atrium, and from here it passes into the right ventricle from which the blood is pumped through the pulmonary artery towards the lungs. The oxygenated blood is carried back to the heart through the pulmonary veins which empty into the left atrium. From the left atrium the blood passes into the left ventricle which then pumps it into the aorta for the distribution throughout the body.

Ex. 2. Complete the sentences:
1. An atrium is …
2. A ventricle is a …
3. The septum is …
4. Blood enters the heart …
5. Then it passes ...
6. The blood is pumped … towards the lungs.
7. The oxygenated blood is carried back to the heart …
8. They empty …
9. The left ventricle pumps the blood …

2. Did you meet (you/meet) Paul yesterday? 3. Father is working (work) in the garden now. 4. What are you doing (you/do) at the moment? 5. Mr Jones painted (paint) his house last month. 6. He goes (go) to school on foot every day. 7. It was (be) hot yesterday. 8. The baby isn’t sleeping (not/sleep) now. 9. He never drives (drive) fast. 10. I didn’t take (not/take) John to school yesterday because he wasn’t well. 11. Planes take off (take off) and land (land) at Heathrow all day. 12. “Where is Mike?” – “He is staying (stay) with his grandmother this weekend. 13. I don’t like (not/like) peanut butter. 14. “What time does your plane leave (your plane/leave)?” – “At 7.45.” 15. At what time did the play begin (the play/begin) last night? 16. “What are you reading (you/read)?” – “It’s a book by Barbara Cartland.” 17. “Do you play (you/play) the piano?” – “No, I don’t.” 18. Dennis Johnson works (work) for an insurance company. 19. Mr Baker came (come) home at 6 pm last night. 20. Uncle Victor is 88 years old. He saw (see) everything and did (do) everything. 21. Dennis doesn’t like (not/like) his work much. 22. Last week he sold (sell) his car and bought (buy) a new one!

Объяснение:

Lake Lama is a large freshwater lake in the Krasnoyarsk territory, in the South of the Taimyr peninsula, of tectonic origin.

The length of the lake is 80 kilometers, the maximum width is 14, the area is 318 sq. km. the Lake is very deep (over 300 meters, in some places, perhaps up to 600 meters), clean water and its low temperature. On the shores of the lake there are mountains with a height of 400-600 meters or more.

The name of the lake comes from the tungus-manchu word "laamu" - sea, ocean or evenk "lamu" - sea, big water.