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Record fires sweeping across the Amazon this month have been catching the world's attention, because scientists and environmental groups are worried that they will make the climate worse and threaten biodiversity.

As the largest rainforest in the world, the Amazon is often called "the lungs of the world". It is also home to about 3 million plants and animals, and 1 million native people. Rainforests play an important role in the world's ecosystem because they can take in heat. They can also store carbon dioxide and produce oxygen, making that less carbon is given off, mitigating the effects of climate change.

"Any forest destroyed is a threat to biodiversity and the people who use that biodiversity," said Thomas Lovejoy. "The most serious threat is that a lot of carbon goes into the air," he added. "In the center of the global climate crisis, we cannot afford more damage to a major source of oxygen and biodiversity. The Amazon must be protected," Antonio said.

Data from the National Institute for Space Research (INPE) show that the number of forest fires in Brazil quickly increased by 82 percent from January to August this year from a year ago. "The forest areas in the Brazilian Amazon have dropped between 20 and 30 percent compared to the last 12 months," Carlos Nobre said.

Word Bank

threaten   威胁   biodiversity   生物多样性   ecosystem   生态系统   crisis   危机   data   数据

1.What does the underlined word "they" refer to in Paragraph 1?

A.fires B.scientists

C.environmental groups D.rainforests

2.Which of the following words has the closest meaning with the underlined word "mitigating" in Paragraph 2?

A.reducing B.increasing

C.causing D.producing

3.What can we know from Paragraph 3?

A.The dry weather leads to the rainforest fires.

B.Carbon dioxide is important in the air.

C.Oxygen has nothing to do with global climate crisis.

D.Forests play an important role in biodiversity.

4.Which of the following statement is true according to the passage?

A.3 million plants, animals and people live in Amazon.

B.Rainforests can store carbon dioxide and produce oxygen.

C.Carbon dioxide goes into the air will do no harm to us.

D.Ecosystem can take in heat and give off carbon dioxide.

5.What's the best title of the passage?

A.The climate change crisis. B.The forest areas are decreasing.

C."The lungs of the earth" is burning. D.The world's ecosystem is under attack.

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