) h2 G2 Z$ ~! W( Z" z5 R + }& z5 b. l/ G( O" x2 ?A mother Polar Bear sleeps on the frozen tundra with her cub. 1 n- a4 ^$ z2 z" g3 [: p: m0 Q- B$ J: O& a( x3 X' N
As the environment becomes worse,the poor polar bears suffer a danger of death./ G7 H4 l" a1 V
We should do more things to save them. . l4 A# J4 X4 K* M) u) N
what action will you do ?
/1 
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发表于 2008-1-18 23:58:17
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发表于 2008-1-19 00:14:23
