阅读下列文章，根据文章内容，从文后所给的A、B、C、D四个选项中选出最佳答案。

　　In the modern world more and more people meet the problem of identity．The most interesting example is that of a so–called “banana” , which refers to an American who has an Asian face but holds Western values．

　　In Shanghai, there now live a group of people from abroad．They look no different from the locals and speak fluent Chinese or even Shanghai dialect, but when it comes to writing Chinese characters, they are almost illiterate(文盲)．Jack is such an example．He never learned to read or write Chinese characters, which he finds mysterious and difficult．From time to time, he files to the US as he does not feel Shanghai is where he comes from．“But when I am in the States, I feel that's not my home either, ”he said．

　　At De Gaulle Airport in France, there is a Swiss man who has been living in the waiting–room for a long time because he lost h is passport during his travels．He was refused entry into several countries．But when he was eventually allowed to return to Swizerland, he refused to leave the airport．His reason was very simple－ “I am sure who I am．I need no acknowledgement from others, ” he said during an interview．For th is reason he was honored by the Western media as “the Hero of identity．”

　　As the Internet becomes more and more popular, the problem of identity becomes more serious．In a virtual world, people can have different addresses registered with different names．In the Internet chat room, even one's gender(性别)is hard to determine．It seems that in the glohal village, people are saying hello every day to each other without knowing whom they are talking to．

　　What will be the next crisis(危机)of identity?With the development of cloning technology, it might be： who is the real “I” ?