diff --git a/eBook/17.1.md b/eBook/17.1.md
index c6ad534..687c9c6 100644
--- a/eBook/17.1.md
+++ b/eBook/17.1.md
@@ -61,9 +61,11 @@ if value, ok := varI.(T); ok {
     for input := range ch {
         Process(input)
     }
+```
 
 或者:
 
+```go
     for {
         if input, open := <-ch; !open {
             break // 通道是关闭的