阅读下面的短文并回答问题，然后将答案写到相应的位置上（请注意问题后的词数要求）。
[1]E-mail may be the most important, unique method for communicating and developing relationships since the telephone．First of all, ____________．Anyone who can use a word processor can also write an e-mail message without difficulty．Secondly, it saves time and money．It costs nothing more than your time．No paper expense, no postage and no envelope expense．People also find it familiar and safe because it is similar in many respects to writing letters but avoids the annoyances of addressing envelopes, licking stamps, and trips to the mailbox．
[2] Of all the methods for developing relationships on the Internet, e-mail is the most common and perhaps the most powerful．Although friendships and romances may indeed begin in chat rooms, instant messages, blogs, or other online tools improve greatly by becoming more effectively visual and auditory（听觉的）, as in video teleconferencing, e-mail will not disappear．Many people will prefer it because it is a non-visual and non-auditory form of communication．After all, we don’t see people rushing out to buy video equipment to add it to their telephone．
[3] E-mail is not just an electronic mail sent via the Internet．It creates a psychological space in which pairs of people or groups of people communicate with each other．It creates a situation in which human relationships can be unfolded．
小题1:What is the main idea of the text? （no more than 12 words）
小题2:Complete the following statement with words from Paragraph 2．（no more than 4 words ）After people begin their relationship in chat room, e-mail plays the role of being a way to
小题3:Fill in the blank in Paragraph 1 with proper words．（no more than 6 words ）
小题4:What situation can the E-mail create? （no more than 9 words ）
小题5:What does the underlined word “ it ” （Paragraph 2） probably refer to ? （no more than 3 words ）