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  3. escape from(Para. 1) can be substituted for What kind of neutrinos would be most useful to astronomers?

escape from(Para. 1) can be substituted for What kind of neutrinos would be most useful to astronomers?

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问题 escape from(Para. 1) can be substituted for
What kind of neutrinos would be most useful to astronomers?
选项 A、Ones which have no electric charge, or little mass.
B、Ones which are created artificially in the laboratory.
C、Ones which can free themselves from the control of matter.
D、Ones which come through a long distance of time and space.
答案D
解析 本题问哪种中微子对天文学家最有用。首段末句说"中微子携带了关于其产生地和产生环境的信息，因此…"，(其中"of their production"指的并不是中微子的产品，而是指它的诞生)。正是这些信息对天文学有着重要的意义(...are of great significance in the study of astronomy)。跨越遥远的时空而来的中微子无疑载有大量信息。故"穿越很长的时空"正确。没有电荷，质量很小；不受物质的控制：这些都是中微子本身的普遍性质，并不是天文学家所刻意寻找的。实验室里人工制造的中微子：第二段谈到粒子加速器产生的中微子，这属于人工制造的中微子，但因为它是人工制造的，反映不出宇宙的信息，所以并不是天文学家所需要的。
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