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  3. Coronary angiography, a sophisticated method for diagnosing coronary disease involving the introduction of a dye into the arteri

Coronary angiography, a sophisticated method for diagnosing coronary disease involving the introduction of a dye into the arteri

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问题 Coronary angiography, a sophisticated method for diagnosing coronary disease involving the introduction of a dye into the arteries of the heart, is now administered selectively, because it uses x-rays to observe cardiac function.
选项 A、for diagnosing coronary disease involving the introduction of a dye into the arteries of the heart, is now administered selectively, because it uses
B、for diagnosing coronary disease involving the introduction of a dye into the arteries of the heart, is now administered selectively, because of using
C、for diagnosing coronary disease, involves the introduction of a dye into the arteries of the heart and is now administered selectively, because it uses
D、to diagnose coronary disease that involves the introduction of a dye into the arteries of the heart, is now administered selectively, because it uses
E、to diagnose coronary disease involving the introduction of a dye into the arteries of the heart, which is now administered selectively, uses
答案C
解析 通读A选项，并未发现很明显的错误，但唯一值得注意的就是句中作为限定词的involving现在分词短语，在A选项中involving修饰disease，但翻译过来总觉得不通；再回到五个选项中，发觉A、B、E中involving的位置都无变化，D中用that从句取代involving，但其语法功能与A、B、E中的involving是一样的，均是修饰disease的。这样几乎可以不用理解C的内容而选C了。正如考生所感觉到的，involving的内容本是介绍主语coronary angiography，而被误放在disease之后修饰disease。该句意思是：冠状血管照相术是一种诊断冠状血管疾病的复杂方法，这种方法需要把一种染料引入到血管中。但现在该方法已被选择性地使用，因为它使用X射线来观察心脏的功能。
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