三、信息还原
请认真阅读下面的短文,从短文后所给的选项中选出能填入空白处的最佳选项,其中有一项是多余的。
$The Yangtze River is the longest river in China and the third longest river in the world. (^1) $$ It is about 6,300 kilometres long. It starts from the Tanggula Mountains and runs through regions including Qinghai, Xizang, Sichuan, Yunnan and so on. (^2) $ During the long history of ancient China, this river helped feed millions of people and develop amazing cultures. The important cities such as Shanghai and Nanjing are sitting along the river.
$(^3) $$ In the past, the water was dirty. A lot of fish died because of water pollution. Luckily, people realized the importance of protecting the Yangtze River. A programme was set up in 1989 to protect the water and land around the river. It was successful because it helped improve the environment. (^4) $ It helps protect white-flag dolphins, one of the rarest animals in the world. The number of white-flag dolphins in China dropped because of the pollution in the Yangtze River.
$(^5) $ However, we still have a long way to go to protect the great river. Let's work together to help our Mother River.
A. So far, we've made some achievements.
B. Finally, it runs into the ocean in Shanghai.
C. The other programme is about animal protection.
D. However, the Yangtze River also faces some problems.
E. A great programme teaches children about endangered animals.
F. It is just after the Nile in Africa and the Amazon in South America.