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76.A giant panda can grow up to 1.5 meters long and weigh up to 160kg 78.The main reason why pandas are endangered is that the area where pandas can live has become smaller. 80. 人们都非常努力工作，以确保大熊猫不会死

76 A giant panda can grow up to 1.5 meters long and weigh up to 160kg.
77. So it is not surprising that the giant panda is chosen as its symbolby the World Wide Fund for Nature. 78. Why are the giant pandas endangered?
78The main reason why pandas are endangered is that the area where pandas can live has become smaller
79 One of the ways that helps them is to increase the size of panda reserves(自然保护区). Some reserves need to be joined together by planting bamboo between them to make “corridors”.
80.人们正努力确信大熊猫不会灭绝.

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76. How long and heavy can a giant panda grow to be?
__A giant panda can grow up to 1.5 meters long and weigh up to 160kg.___________
77. 将文中划线的句子①改为被动句。
So it is not surprising that _____the giant panda is chosen as its symbol__by the World Wide Fund for Nature.
78. Why are the giant pandas endangered?
___The main reason why pandas are endangered is that the area where pandas can live has become smaller.___
79. Give a way to help the giant pandas in the wild, please.
___One of the ways that helps them is to increase the size of panda reserves(自然保护区).____
80. 将文中划线的句子②翻译成中文。
___人们正竭尽全力使大熊猫不会灭绝。_____