As Australia experiences record-breaking drought and bush-fires，koala populations have declined along with their habitat，leading to koalas becoming "functionally extinct".The chairman of the Australian Koala Foundation，Tabart，estimates that over 1，000 koalas have been killed from the fires and that 80 percent of their habitat has been destroyed.
Functional extinction is when a population becomes so limited that they no longer play an important role in their ecosystem and the population becomes no longer possible to live.
Deforestation and bush-fires destroy the main food source of koalas，the eucalyptus（桉樹）tree.An adult koala will eat up to 2 pounds of eucalyptus leaves per day as its main food.
Many are asking the Australian government to pass The Koala Protection Act，written in 2016 but never passed into law.The Koala Protection Act would work to protect habitat and trees important to koala as well as protect koalas from hunting.
Recent videos of Australians saving koalas has led to increased donation to help burned koalas.The Port Macquarie Koala Hospital set up a Go Fund Me page seeking donations to help the hospital treat injured koalas.To date，they have raised ＄1.33 million，well over their ＄25，000 goal，which comes from over 30，000 donors.The funds will also be used for a "Koala Ark" as a refuge for burned koalas to live in healthy habitat.
（1）According to the first paragraph，what can we know about the drought and bush-fires？ AA
A．They are the most serious ones in the history of Australian.
B．They have made koalas extinct.
C．They have killed 80% of the koalas.
D．They brought the most serious influence to Australian.
（2）When does functional extinction happen？ DD
A．When a species becomes extinct.
B．When a species is limited to certain habitat.
C．When ecosystem no longer plays an important role.
D．When the number of a species becomes so small that they have little chance to live.
（3）According to the passage，the following statements are true EXCEPT that BB.
A．koalas mainly feed on eucalyptus tree leaves
B．the Australian government has passed The Koala Protection Act into law
C．The Koala Protection Act is aimed to protect koalas and its habitat
D．a(chǎn) good many Australians are quite concerned about koala
（4）What can we infer from the last paragraph？ CC
A．Some videos require people to donate for koalas.
B．Go Fund Me page treated injured koalas.
C．Australians have deep love for koalas and donate generously to help them.
D．The funds will be used to set up healthy habitat for koalas.
【答案】A；D；B；C
【解答】
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發(fā)布：2024/5/27 14:0:0組卷：3引用：1難度：0.5
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