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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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In this sentence the pronoun it does not always refer to condition, but, for the sake
of clarity and correctness, it should. Detect a condition when it is present is correct
and should be followed by a corresponding construction: indicate that it is present
when it is not. The construction of there is one leaves it without a referent.
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