求指点,刚学go,这个为什么死锁,怎么解决?

package main

import ( "fmt" )

func bbb(rch chan string) { a := []string{"aaaa", "bbbbb", "ccccc"} for _, b := range a { rch <- b } } func aaa(rch <-chan string, ch chan<- bool) { for m := range rch { fmt.Println(m) } ch <- false } func main() { ch := make(chan bool) rch := make(chan string) go bbb(rch) go aaa(rch, ch) <-ch }