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阅读下面短文,在空白处填人1个适当的单词或括号内单词的正确形式。 The world's last and loneliest surviving male northern white rhino,...
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阅读下面短文,在空白处填人1个适当的单词或括号内单词的正确形式。
The world's last and loneliest surviving male northern white rhino,Sudan,has died.He was 45 and lived in Kenya.
His1.(die)means there are only two rhinos of this type 2. (leave)alive in the entire world.They are both female-and are Sudan's daughter and granddaughter.
Rhinos are the second 3.(large)land mammal after elephants.There are around 20 thousand southern white rhinos living in the wild.But the northern white rhino4.(endanger)-with just two left now.
5.Sudan has died is a cruel symbol of humans' ignoring nature.Because of hunting,white rhinos were almost wiped out in the 1970s and 1980s.
But 6.so many other wildlife species on Earth,why is the white rhino so important?The answer is down to biodiversity.Scientists say that all species are interconnected.They depend on one another.With less biodiversity,these 7.(connect)weaken and sometimes break,8.(harm)all the species in the ecosystem.
Is there any hope for the species in the future? 9. (Fortunate),efforts are being made to save the white rhino.Scientists now hope they may be able to use10.special technique called IVF to try to help save the species.Before Sudan died,some of his genetic material was taken and carefully stored.Scientists hope that the two females can have their own children one day.
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