Boston房产价格数据集，总共有14个字段，分别为CRIM、ZN、INDUS、CHAS、NOX、RM、AGE、DIS、RAD、TAX、PTRATIO、B、LSTAT和MEDV。其中，前13个字段是对某一个房产的描述信息，最后一个是平均房产价格。 字段解释： CRIM per capita crime rate by town ZN proportion of residential land zoned for lots over 25,000 sq.ft. INDUS proportion
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1. D Relieved2. B she could go as far as she wanted in life3. B The power of role models4. D Obama's success impacted blacks' performance in language tests
5. A The change in bias against black is slow in coming6. C people are now less ready to
