题目内容：

    The endangered pandas in Qinling Mountains might face a new threat(威胁): the loss of their food, bamboo, which makes up 99% of their meals.

Adult pandas spend most part of the day eating bamboo and have to take in at least 40 pounds a day to stay healthy. However, a new study published in Nature and Climate Change warned that they may soon find their food gone because most of the bamboo in Qinling Mountains might disappear by the end of the century as a result of rising temperature worldwide.

A team made up of researchers from Michigan State University and the Chinese Academy of Sciences has studied the effects of climate change on the bamboo in Qinling Mountains. They have found that bamboo is very sensitive to climate changes. “80% to 100% of the bamboo would be gone if the average temperature increases 3.5 degrees worldwide by the end of the century.” said Liu Jianguo, one of the report’s authors.

He added, “This is how much the temperature would rise by 2100 even if all countries will keep their promises in the Paris Agreement. But you know what is happening around the world.”

In recent years, China has been trying its best to protect the endangered pandas by setting up more and bigger natural reserves.

“But it is far from being enough and the endangered pandas need cooperation from the rest of the world, because their future is not just in the hands of the Chinese,” said Shirley Martin from World Wildlife Fund but not a member of the team.

The Qinling Mountains, in the southwest of China, are home to about 260 pandas. That is about 13% of the China’s wild panda population. In addition, about 375 are living in research centers and zoos in China.

1.What can we learn from the first paragraph?

A.Lots of the bamboo in Qinling Mountains will probably disappear.

B.Qinling Mountains cannot provide enough bamboo for the pandas.

C.Pandas in Qinling Mountains are just threatened by the loss of food.

D.Pandas have already eaten 99% of the bamboo in Qinling Mountains.

2.What does Liu Jianguo mean?

A.China needs more help from World Wildlife Fund.

B.Bamboo is sensitive to the changes of temperature.

C.China is making great efforts to protect the pandas.

D.It is difficult to control the temperature rise within 3.5℃.

3.How many wild pandas are there in China?

A.About 260. B.About 635.

C.About 2,000. D.About 2,635.

4.Which can be the best title for the text?

A.The Disappearance of Bamboo B.Necessity to Change Pandas’ Food

C.Efforts Made to Save Pandas D.A New Threat Faced by the Pandas