编写一个程序，对于输入的一段英语文本，可以统计：

1、该文本中有多少英语单词；

2、该文本中有多少不同的英语单词。

如，输入 I am a good student. I am in Zhengzhou.

则可以统计出有9个英语单词、7个不同的英语单词。

-Write a program that, for a period of English text input, you can count: 1, the number of English words in the text, there is　2, how many different English words in the text, there is. For example, the input I am a good student. I am in Zhengzhou. Then can the statistics have nine English words, seven different English words.