diff --git a/docs/8.预测数值型数据：回归.md b/docs/8.预测数值型数据：回归.md
index 5c29ab47..1e3fe942 100644
--- a/docs/8.预测数值型数据：回归.md
+++ b/docs/8.预测数值型数据：回归.md
@@ -11,7 +11,7 @@
 
 回归的目的是预测数值型的目标值。最直接的办法是依据输入写出一个目标值的计算公式。
 
-假如你想要预测姐姐男友汽车的功率大小，可能会这样计算:
+假如你想要预测兰博基尼跑车的功率大小，可能会这样计算:
 
 HorsePower = 0.0015 * annualSalary - 0.99 * hoursListeningToPublicRadio
 
@@ -88,6 +88,7 @@ HorsePower = 0.0015 * annualSalary - 0.99 * hoursListeningToPublicRadio
 数据格式为: 
 
 ```
+x
 1.000000	0.067732	3.176513
 1.000000	0.427810	3.816464
 1.000000	0.995731	4.550095
diff --git a/src/python/8.PredictiveNumericalDataRegression/regression.py b/src/python/8.PredictiveNumericalDataRegression/regression.py
index 5372cdee..11ea93be 100644
--- a/src/python/8.PredictiveNumericalDataRegression/regression.py
+++ b/src/python/8.PredictiveNumericalDataRegression/regression.py
@@ -584,9 +584,9 @@ def regression5():
     
 
 if __name__ == "__main__":
-    # regression1()
+    regression1()
     # regression2()
     # abaloneTest()
     # regression3()
-    regression4()
+    # regression4()
     # regression5()
\ No newline at end of file