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题库 / Prep2007E1-SC-42
As a result of a supernova explosion, every human being on Earth was bombarded on February 23, 1987, by about 100 billion neutrinos; fortunately, neutrinos are harmless elementary particles that are produced in nuclear reactions and that interact very weakly with matter.
neutrinos are harmless elementary particles that are produced in nuclear reactions and that
neutrinos, which are harmless, are elementary particles produced in nuclear reactions and which
neutrinos are harmless elementary particles produced in nuclear reactions and which
these harmless elementary particles are produced in nuclear reactions, and neutrinos
these elementary particles, harmless products of nuclear reactions, are neutrinos that
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注意需要理解全部内容，前面说的是不好的事情，fortunately，后面应该是好的事情
d）单看这2句话语法没问题，是2个单句，但和前面不好的事情无法形成转折意思：每个人都遭受到了攻击，粒子是在核反应中产生的；每个人都遭受到了攻击，中微子与物质的相互作用非常微弱
逻辑不对
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