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We shall probably never be able to______ the exact nature of these sub-atomic particles.
We shall probably never be able to______ the exact nature of these sub-atomic particles.
admin
2017-03-25
64
问题
We shall probably never be able to______ the exact nature of these sub-atomic particles.
选项
A、assert
B、impart
C、ascertain
D、notify
答案
C
解析
四个选项的意思分别是:assert声称,维护,坚持;impart传授,给予,告知,透露;ascertain弄清,确定,查明;notify通知,布告。句意是,我们也许永远不可能知道这些亚原子粒子的确切本质。根据句意可推出正确答案是C选项。
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