题目内容：
阅读材料，回答题。Not long ago, I had my first online chat. I thought it would be ____51_______ because I have heard so many people describe it in that way. But it was, disappointingly, quite an unpleasant ______52_____
On line I met a man ____53_______ said he was a manager in a big company in Dalian. We chatted pleasantly first, then exchanged email a dresses in order to keep in touch in the future._____54______, he sent me an email. When I opened it, I found, to my surprise, a detailed(详细的) self introduction including age,______55_____, weight, habits and future plans. It was an advertisement for a dating(约会) service! I was hurt _____56______ felt rather angry.
When I told a veteran (有经验的) Internet surfer( 网民 ) of my experience, he said it was not uncommon. I was ____57_______ The Web provides such a nice, large place to make friends, why do some people ____58____ it?
The relationship between one another should be mutual(互助的) politeness and respect. Online we can’t see one another’s physical form, but we are talking through our _____59______. Such tricks as the one I met are not polite at all.
Since the Web belongs to everyone, every user has a duty to keep a friendly and polite atmosphere(氛围. We need ____60_______ honesty and respect online.
__________ A．exciting
B．disappointing
C．surprising
D．frightening
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