Given two non-zero real numbers a and b，satisfy |2a-4|+|b+2|+
(a-3)b2
+4=2a，then the value of a+b is（　�。�
A、-1B、0C、1D、2
分析：本題根據(jù)非負(fù)數(shù)、算術(shù)平方根的概念和性質(zhì)，化簡解答．
解答：解：依題意
.
2a-4
  
.
+
.
b+2
  
.
+
(a-3)b2
=2a-4，
∴2a-4≥0，2a-4+
.
b+2
  
.
+
(a-3)b2
=2a-4，
∴
.
b+2
  
.
+
(a-3)b2
=0，
∴b=-2 a=3，
∴a+b=1．
故選C．
點(diǎn)評(píng)：本題主要考查了非負(fù)數(shù)、算術(shù)平方根的概念及性質(zhì)，通過變形化簡解答．正確理解非負(fù)數(shù)、算術(shù)平方根等概念和性質(zhì)是解答問題的關(guān)鍵．
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