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yuandefeiyi 发表于 2012-1-12 12:43 ![]()
楼上的题目,我不太明白最后一个空。为什么不选择G呢??既然是发展成为有害的,不就是virulence.. ...
Read the last sentence, it means the shorter time the parasite in the body, the more harmful it is.
The 2nd blank is insufficient, which means having too short time to develop harmlessness (benignity). If chose virulence, then the 2nd should not be insufficient (enough instead) because the shorter time in body, the more harmful it will be. |
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