题目内容：

阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白出的最佳选项。

It’s March 12th. Li Li and Lin Tao are digging on a hill nor far from their school. In China, people across the country plant trees_________on this day.

The idea of planting trees was first put forward in 1911 by Sun Zhongshan, the great_______  in China’s history. He said more trees were needed as a_________against flood(洪水)and drought. In 1915, April 5th was named as Tree Planting Day.Then, in 1979, the day_______to March 12th, to  _______the date on which Sun Zhongshan died.

“Everyone has heard of the Great Wall of China,”says Li Li. “But have you heard of the Green Wall of China? That’s the biggest tree planting _______ of all. ”The Gobi Desert in the north of China was _______every year. So in 1978, a tree planting project was started to _______ Gobi spreading. The government and local farmers have been planting millions of trees to build a great green“wall” along the edge of the desert.

“Tree planting has become a tradition in China now,”says Lin Tao. “Almost everyone does it on March 12th. Many people also plant a tree on a  _______ day. My parents planted a tree when started school. And my cousin planted _10__ on his wedding (婚礼 day. We do it for the environment and for ourselves.”

1.A. silently B. wisely C. completely D. actively

2.A. artist B. engineer C. pioneer D. musician

3.A. protection B. position C. preparation D. direction

4..A. taken B. decided C. changed D. given

5.A. value B. remember C. express D. admire

6.A. research B. survey C. project D. success

7.A. growing B. appearing C. losing D. happening

8.A. keep B. have C. help D. stop

9.A. different B. special C. basic D. simple

10.A. one B. that C. it D. this