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2007年税收收入比_卜．年增长了约( )。
A.37．9％
B.31．4％
C.22．4％
D.20．8％

A.年增长了约(
B.37．9％
B.31．4％
C.22．4％

【参考答案】

B
解析：(49449-37637)+37637×100％≈31．4％，故选B。
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