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  3. Lance Bass wasn’t able to go on a tour of space because of health problems. What makes going to space the most expensive vacati

Lance Bass wasn’t able to go on a tour of space because of health problems. What makes going to space the most expensive vacati

admin2008-12-10  73
问题 Lance Bass wasn’t able to go on a tour of space because of health problems.
What makes going to space the most expensive vacation is the enormous cost involved in ______.
选项
答案the fuel of spacecraft
解析 本题空白处问“使得太空旅行成为最昂贵旅行的是哪方面的巨大花销”。文中相关部分在第十四段，提到“太空飞船需要百万磅的燃料飞到太空，这使得发射非常昂贵”。因此，答案为the fuel of spacecraft。
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