1、In order to remit the traffic jam, either the government increases the tax of the private car nor develops the public transpotation.
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; ]' O/ t/ v" s8 p1 c9 e8 Q3 X2、Internet is a double edge.
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3、It comes to the species diversity, Australia is an typical example.7 v0 P! k9 W8 i; @' Y
6 q* \" f; ?6 [( F/ W/ a4、21th century required us to arm ourselves with the advanced knowledge.
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+ _1 g6 ^1 y& y7 g( x7 U5、Some poignant problems have appeared. |