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In recent years speculation has abounded that Albert Einstein can have had Asperger syndrome.
In recent years speculation has abounded that Albert Einstein can have had Asperger syndrome.
admin
2011-07-28
25
问题
In recent years speculation has abounded that Albert Einstein can have had Asperger syndrome.
选项
答案
can——must
解析
表示对过去事实肯定的猜测,结构是must have done sth.,反之,结构应为can’t have done sth.。
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0
专业英语八级
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