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  3. I don’t know why UFOs are never sighted over large cities by hordes of people. But it is consistent with the idea that there are

I don’t know why UFOs are never sighted over large cities by hordes of people. But it is consistent with the idea that there are

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问题     I don’t know why UFOs are never sighted over large cities by hordes of people. But it is consistent with the idea that there are no space vehicles from elsewhere in our skies. I suppose it is also consistent with the ideas that space vehicles from elsewhere avoid large cities. However, the primary argument against recent extraterrestrial visitation is the absence of evidence.
    Take leprechauns. Suppose there are frequent reports of leprechauns. Because I myself am emotionally predisposed in favor of leprechauns, I would want to check the evidence especially carefully. Suppose I find that 500 picnickers independently saw a green blur in the forest. Terrific. But so what? This is evidence only for a green blur. Maybe it was a fast hummingbird. Such cases are reliable but not particularly interesting.
    Now suppose that someone reports: "I was walking through the forest and came upon a convention of 7000 leprechauns. We talked for a while and I was taken down into their hole in the ground and shown pots of gold and feathered green hats. "I will reply: "Fabulous! Who else went along?" And he will say, "Nobody", or "My fishing partner". This is a case that is interesting but unreliable. In a case of such importance, the uncorroborated testimony of one or two people is almost worthless. What I want is for the 500 picnickers to come upon the 7000 leprechauns.., or vice versa.
    The situation is the same with UFOs. The reliable cases are uninteresting and the interesting cases are unreliable. Unfortunately, there are no cases that are both reliable and interesting.
选项 A、The author is not sure whether they are true or not.
B、The author doubts if they are true.
C、The author doesn’t think they are interesting.
D、The author simply does not believe them.
答案D
解析 根据文章第一段最后一句the primary argument against recent extraterrestrial visitation is the absence of evidence．可知作者认为外星来访的说法是没有根据的，因此是完全不相信此事。
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