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题库 / OG2016V-SC-87
Any medical test will sometimes fail to detect a condition when it is present and indicate that there is one when it is not.
a condition when it is present and indicate that there is one
when a condition is present and indicate that there is one
a condition when it is present and indicate that it is present
when a condition is present and indicate its presence
the presence of a condition when it is there and indicate its presence
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麻烦大佬帮我看看题目选c之后的整个句子是啥意思吧！万分感谢！！！
ac纠结了好久不知道怎么判断…
意思是：某些时候，医药测试会在当一个情况（病情）出现的时候显示它没有出现，或者当一个情况（病情）没有出现的时候显示它出现了。
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