拜托,这个很难的,算了,我只告诉你71页的.
1 BABACBACCA
2 DCDBA
3 ABCDD
4 F The Polar bear lives in the snow and ice Because its coat is yellow-white
It lives on fish and sea animals北极熊具有很厚的皮层,因为北极圈以北的天气非常寒冷is ;heavy
5 BCDBA
6 ACBBDCBDCB
7 ABAD
呼!～好多呀,累死了.我就说这么 多到第77页
就说这么多．．．．．．．．．