Arbor Day in China is on March 12 every year. It is a day for planting trees and caring for the environment. China started this day in 1979. The goal is to make the country greener and help people learn about nature. How can you take part? There are many easy ways to join in.

You can plant trees at school. Many schools have tree-planting events. You can join your classmates and plant a tree together. It is fun and you will feel happy to help the earth.

You can also help in your community. Local groups often plan tree-planting activities. You can work with neighbors to plant and take care of trees.

Another idea is to go to talks about the environment. These talks teach you how to protect nature and live in a green way.

1.1.When did China start Arbor Day?

A In 1978.

B In 1979.

C In 1980.

D In 1981.

解析：选B。B 细节理解题。根据第一段第三句 “China started this day in 1979.”可知，中国在1979年设立植树节。故选B。

2.2. What can students do at school on Arbor Day?

A Plant trees with classmates.

B Have a big party.

C Read storybooks.

D Play ball games.

解析：选A。A 细节理解题。根据第二段的“You can plant trees at school. Many schools have tree-planting events. You can join your classmates and plant a tree together.”可知，学生可以在学校和同学一起种树。故选A。

3.3. What can people learn from environmental talks?

A How to plant flowers.

B How to use computers.

C How to write stories.

D How to protect nature.

解析：选D。D 细节理解题。根据第四段的“These talks teach you how to protect nature and live in a green way.” 可知，环保讲座可以教人们如何保护自然。故选D。

4.4. How can you help others know the importance of trees?

A Watch TV all day.

B Sleep a lot.

C Share online.

D Do homework.

解析：选C。C 细节理解题。根据最后一段的“Finally, you can use the Internet to help. Share photos or stories about Arbor Day online.”可知，可以通过在网上分享来让更多人知道树木的重要性。故选C。