题目内容：

Teachers’ Day is, interestingly, not celebrated on the same day all over the world. In some countries it is marked by a holiday, in others it is a working day.

International Teachers’ Day is celebrated on October 5. Being held ever since 1994, it is in honor of teachers' organizations worldwide. Its aim is to encourage supports for teachers and to meet the needs of students.

China ― In 1939, Teachers’ Day was set for August 27, Confucius' birthday. In1951, the celebration was stopped. However, it was founded again in 1985, and the day was changed to September 10.

India ― Teachers’ Day is celebrated on September 5 in honour of Dr. Sarvepalli Radhakrishnan, the second president of India, whose birthday falls on that day.

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.

1.Which of the following has the same meaning as the underlined word “observed”?

A. stopped    B. held

C. celebrated    D. fell

2.Which of the following is possibly true?

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

B. Dr Sarvepalli Radhakrishnan’s birthday is in September

C. Teachers’ Day is an official holiday in the United States.

D. Teachers’ Day is a working day in schools of Thailand.

3.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