The example of cancer patients is used by the author to show that ______.
A.medical resources are often wasted B.some treatments are too aggressive C.doctors are helpless against fatal diseases D.medical costs are becoming unaffordable正确答案A
The example of cancer patients is used by the author to show that ______. 
The example of cancer patients is used by the author to show that ______.
A.medical resources are often wasted B.some treatments are too aggressive C.doctors are helpless against fatal diseases D.medical costs are becoming unaffordable正确答案A
