Russia ― In Russia, Teachers' Day was celebrated on the first Sunday of October between 1965 and 1994. Since 1994, the day is observed on the October 5, just the same day as World Teachers Day.

The US ― In the US, Teachers' Day is non-official holiday. It is celebrated on the Tuesday of the first full week of May. A number of activities are organized in schools to honor teachers. The celebrations can continue for the whole week of May.

Thailand ― In Thailand, National Teachers' Day is celebrated every year on January 16. The first Teachers' Day was held in 1957. The day is a holiday in schools.

21. What country celebrates Teachers' Day in October?

　　A. India. B. Russia. C. Thailand D. The US.

22. Which of the following has the same meaning as the underlined word "observed"?

　　A. stopped B. held C. celebrated D. fell

23. Which of the following is possibly true?

　　A. China has celebrated Teachers' Day since the year 1931.

　　B. Teachers' Day is an official holiday in the United States.

　　C. Teachers' Day is a working day in schools of Thailand.

　　D. Dr Sarvepalli Radhakrishnan's birthday is in September.

24. From the passage we can learn that ________.

　　A. The first Teachers' Day was held in 1965 in Thailand

　　B. Teachers' Day falls on Confucius' birthday in China

　　C. International Teachers' Day aims to benefit the students

　　D.A lot of activities are held on Teachers' Day across the world

B

　　"An apple a day keeps the doctor away." Similarly, if we drink a little more water every day, we may find that we need to go to the doctor a lot less often. A healthy diet is made up of water and a great many different kinds of foods. We know that healthy foods like fruits, vegetables and fish, are important as they provide us with energy and fiber, without giving us too much fat and sugar. But why is water important?

The human body needs water to survive. Water is important as it carries poisons