1、C
2、A
3、A
4、B
5、D
6、B
1、They are scared that the giant pandas may become part of our history.
2、It means that the giant pandas may die out.
3、They cannot physically support two babies at the same time.
4、The breeding centers provide panda mothers with a safe and helpful enviornment.
5、Our next generations would only be able to see them in books.
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