It's commonly known that greenhouse gases like carbon dioxide （CO₂）causes global warming.The whole world has made great efforts to improve the situation.Especially，the trees planted in China are playing an important role.
   A report published in Nature shows that CO₂ absorption （吸收） in two new forest areas in China is more than we thought.The two areas are located in China's southwestern and northeastern provinces.They make up over 35 percent of China's carbon sinks.Carbon sinks are natural systems that absorb and store CO₂ from the air.The main natural carbon sinks are trees and other plants.
   According to Paul Palmer，these provinces have been working on rapid forestation（造林）in large areas.Over the past 10 to 15 years，the forest areas have kept increasing by 400--4，400 square kilometers per year.
   China is one of the world's biggest countries of human-produced CO₂，____.In 1978，China began a national-level forestation project.Many trees have planted in the areas of northern China to act as windbreaks.For example，about one third of the Kubugi Desert in Inner Mongolia is now covered with trees.In 2019，Alipay's Ant Forest program planted 122 million trees and won the UN Champions of the Earth award for helping 500 million people live low-carbon lives.
   China's goal is to reach carbon neutrality by 2060.Carbon neutrality refers to removing as much CO₂ as one puts into the air.If China's goal is achieved，it will lower global warming by around 0.2 to 0.3 C alone，according to Climate Action Tracker （CAT）.

（1）China's two new forests areas

B

B

.
A．play an important role in tree-planting
B．are in the southwest and northeast of China
C．cover more than half of China's carbon sinks
D．mainly absorb and store trees and other plants
（2）In Paragraph 3，Paul Palmer shows China's achievement in forestation by

A

A

.
A．using numbers
B．asking questions
C．giving examples
D．comparing facts
（3）Which of the following can be put in the

D

D

in Paragraph4？
A．and it has caused serious environmental problems
B．so the government will take steps to stop air pollution
C．though most of Chinese people are living low-carbon lives
D．but our country has been working on reducing its climate influence
（4）The passage mainly talks about

B

B

.
A．what causes global warming
B．what China does to lower global warming
C．how China produces so much CO₂
D．how trees absorb and store CO₂ from the air