GMAT
Coronary angiography, a sophisticated method for diagnosing coronary disease, involves the introduction of dye into the arteries of the heart and is now administered selectively, because it uses x-rays to observe cardiac function.
Coronary angiography, a sophisticated method to diagnose coronary disease involving the introduction of a dye into the arteries of the heart, which is now administered selectively, uses x-rays to observe cardiac function.
题目基本信息