第4关：挑选以元音字母开头的单词

for i in range(5):n = input('Please enter a word:')yuanyin = ['a','e','i','o','u']if n[0] in yuanyin:print(n)

本关任务：编写程序,从键盘输入5个英文单词，输出其中以元音字母开头的单词。

测试输入与预期输出：

Please enter a word:a

a

Please enter a word:hello

Please enter a word:every

every

Please enter a word:enter

enter

Please enter a word:key