diff --git a/eBook/11.10.md b/eBook/11.10.md
index 5d27cde..b98c178 100644
--- a/eBook/11.10.md
+++ b/eBook/11.10.md
@@ -102,7 +102,7 @@ func main() {
 
 ```
 type: float64
-value: <float64 Value>
+value: 3.4
 type: float64
 kind: float64
 value: 3.4
diff --git a/eBook/11.9.md b/eBook/11.9.md
index 7b4432b..1be83a9 100644
--- a/eBook/11.9.md
+++ b/eBook/11.9.md
@@ -1,4 +1,4 @@
-# 11.9 空接口
+# 11.9 空接口
 
 ## 11.9.1 概念
 
@@ -164,7 +164,7 @@ var interfaceSlice []interface{} = dataSlice
 var dataSlice []myType = FuncReturnSlice()
 var interfaceSlice []interface{} = make([]interface{}, len(dataSlice))
 for ix, d := range dataSlice {
-    interfaceSlice[i] = d
+    interfaceSlice[ix] = d
 }
 ```