单选题
Which of the following questions is best answered by information gained from Kohoutek?
A、
Where were comets formed?
B、
When were comets formed?
C、
Where was the solar system formed?
D、
How was the solar system formed?
【正确答案】
A
【答案解析】
[解析]从 kohoutek 得出的信息证明了慧星在哪儿形成的。文章第九行：This discovery revealed new clues about the origin of comets。故应选A。
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