137. 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.
(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 heart, is now administered selectively, because of using
(C)for diagnosing coronary disease, involves the introduction of 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 答案为什么是C呢， involves 不是修饰disease的吗，C怎么变成主句的谓语了，求NN指点作者: ylp2008 时间: 2013-2-28 15:06
懂了，从逻辑上理解。作者: kiwifoodtown 时间: 2013-3-1 10:34
involving the introduction of a dye into the arteries of heart，来修饰disease的话非常不合逻辑。