2. The author uses the example of cancer patients to show that A
A. Medical resources are often wasted
B. Doctors are helpless against fatal diseases
C. Some treatments are too aggressive
D. Medical costs are becoming unaffordable
原文：
...Shielded by third-party payers from the cost of our care, we demand everything that can possibly be done for us, even if it’s useless.總起句 The most obvious example is late-stage cancer care. Physicians— frustrated by 例1 their inability to cure the disease and fearing loss of hope in the patient— too often 例2 offer aggressive treatment far beyond what is scientifically justified