A
The endangered pandas in the 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 of the time eating bamboo and have to take in at least 40 pounds a day to stay healthy. However, a new study warned that they might soon find their food gone because most of the bamboo in the Qinling Mountains might disappear by the end of the century as a result of the rising temperature.
A team made up of researchers has studied the effects of climate change on the bamboo in the Qinling Mountains. They have found that bamboo is very sensitive to climate change. “80% to 100% of the bamboo will be gone if the average temperature increases by 3.5 degrees Centigrade worldwide by the end of the century，” said Liu Jianguo, one of the report's authors. He added, “This is how much the temperature will rise by 2100 even if all countries keep their promises in the ParisAgreement. 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 nature reserves (保护区)．
“But it is far from 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 are home to about 345 pandas. That is about 18% 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 the Qinling Mountains will probably disappear.
B．The Qinling Mountains cannot provide enough bamboo for the pandas.
C．Pandas in the Qinling Mountains are just threatened with the loss of food.
D．Pandas have already eaten 99% of the bamboo in the Qinling Mountains.
2．What did Liu Jianguo mean?
A．China needs more help from World Wildlife Fund.
B．The current climate is not suitable for bamboo any more.
C．China is making great efforts to protect the pandas.
D．It is difficult to prevent the temperature from rising by 3.5 ℃.
3．How many wild pandas are there in China?
A．About 345. B．About 720.
C．About 1，900. D．About 2，275.
4. Which can be the best title for the text?
A．The Disappearance of Bamboo
B．Necessity of Changing Pandas' Food
C．Efforts Made to Save Pandas
D．A New Threat Faced by Pandas
