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目前国际标准科研用小鼠微生物等级是级动物。

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实验用动物的定义？

清洁级动物的定义？

我国公民享有选举权必须年满16周岁。

A. 对
B. 错

Inspired by Paul Miller’s personal experiment of going one year with absolutely no 1)___ , the writer went on his own short 2). He did it because having been plugged in 24-7 for a decade, he wanted to see what would happen if he went 3)_ for a while. So during his winter vacation to Mexico, he didn’t go 4)__ except to check his email. As a result, he discovered that technology is5)_ evil and technology is already a 6)_ of him now. 7)___, he also came to the conclusion that it is the 8)_ of thoughtful articles and good books, 9)snacky online content, that 10)_______ the mind.