Why was Kohoutek referred to as "the comet of the century" ? According to the passage, what is one major component of Jupiter?

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问题 Why was Kohoutek referred to as "the comet of the century" ?
According to the passage, what is one major component of Jupiter?

选项 A、Hydrogen cyanide.
B、Methyl cyanide.
C、Hydrogen.
D、Ammonia.

答案D

解析 文章倒数第四行:If compounds no more complex than ammonia and methane, key components of Jupiter, were seen in comets.如果混合物只是氮和甲烷,那么在慧星上发现木星的主要元素是氮和甲烷。
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