真正把大学生“村官”制度作为农村建设输送人才的一项短期战略计划，积极培养他们成为农村中的精英群体。()
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科斯(RonaldCoase)的理论证实：在市场充分发育和交易成本足够低的条件下，不管资源产权界定给谁，经济外部性问题都可以通过资源的产权确定来解决，而且产权的确定会同时使资源利用的社会总效益达到最大。()
What have Americans been proud of for a long time？
Americans have been proud that their country is the richest one.
B. Americans have been proud of belonging to the greatest power in the world.
C. Americans have been proud of their improving quality of life.
D. Americans have been proud that they have never lost hope for the future.
由于扫描光斑具有一定尺寸、条码印刷时的边缘模糊性以及一些其他原因，经过电路放大的条码电信号是一种平滑的起伏信号，并不呈现像条码符号亮暗条之间泾渭分明的特征，这种信号边缘常被称为条码的“()”。
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