【求教】蓝皮review第80题，关于多个it的不同指向

colgategao · 发表于 2012-5-12 16:01:17

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)
(B) when a condition is present and indicate that there is one
(C)a condition when it is present and indicate that it is present
(D)when a condition is present and indicate its presence
(E) the presence of a condition when it is there and indicate it presence.
答案是C

这个题我完全没头绪。
1、present可以为noun，我查了下cambridge，上面只有2种名词解释，1、礼物，2、现在。
2、甚至不理解全句的意思。。。。尤其是indicate后面的.。。

谢谢解答的童鞋先。。。

colgategao · 发表于 2012-5-13 00:58:12

【求教】蓝皮review第80题，关于多个it的不同指向

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