1.Cấu tạo hoá học, cấu trúc không gian và chức năng của ADN.   

2. Nguyên tắc nhân đôi ADN.

3. Nguyên tắc nhân đôi ARN

Thêm từ giúp em, cần gấp cảm ơn ạ 1.I/ just read/ your advertisement/ "Tuoi Tre" 2.I /find/ your course/ "Bartender"/ very interesting 3. I want/ attend/ít/ but/ not know/ how much/ course/is 4. Please send me/ information/ fee/ course 5 I/ expect/pass/ entrance test

Read and answer the questions:        Canada is the world's second largest country. Its population is not very large, however. About 25 million people live in Canada. Canada is in North America and its capital is Ottawa. It is a rich country with a lot of natural resources. In Southern Canada the land is very good for farming. In the West there are some very high mountains called the Rockies. Canada also has many minerals such as petroleum, gas and copper. Canada was first settled by French pioneers. In the 18th century there were wars between Britain and French, and Canada came under British rule. Since 1931 Canada has been independent. English and French are both official language in Canada. 

1. What is the population of Canada? 

2. What are the highlights mountains called? 

3. Can u name some nimerals found in Canada? What are there? 

4. When did Canada come under British rule? 

5. Do people in Canada speak both En and French? 

Answer the question

Last year, we had a nice holiday. My friend and I went to the seaside for a month. I had been to the seaside several times before, but this was the first time for my friend. Naturally, it was the great event for him. Finally, the day came. It was a fine morning. We got up very early because we wanted to leave home after breakfast. We made the journey by car. We reached the seaside at noon. We spent many hours on the beach. We enjoyed making castles and channels in the sand. People said we ought to spend at least a few weeks at the seaside. If we could stay longer, so much the better.

1. Where did they go on their holiday last year? 

2. Why did they get up very early? 

3. How did they make the journey? 

4. They reached the Seaside at noon, didnt they?