At first, NASA is ______ private citizen’s space travel. If a person really wants to go to the space station, he or she should

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问题 At first, NASA is ______ private citizen’s space travel.
If a person really wants to go to the space station, he or she should spend ______ in total.

选项 A、$ 200 000
B、twelve million dollars
C、twenty million dollars
D、more than twenty million dollars

答案D

解析 分析推理题。倒数第二段说明了进行太空旅行的费用。第二句指出培训费用是two hundred thousand dollars($200 000),而第三、四句说这还不包括去空间站的费用,在太空中度假的费用是twenty million dollars($200000000),因此总的费用是二者之和,选[D]。
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