参考答案

正确答案：D
解析：Question: What does Doctor Myer do to insure her patients understand her instructions?
本题为细节题。本题询问Myer医生怎么样确定病人完全明白了自己的建议。文章中提到She asks them to tell her what they think they are supposed to do．(她要求病人告诉她他们该怎么做)。tell her对应D选项中的repeat，即再讲一遍。A是说鼓励他们提出疑问；B是说让他们把医嘱写下来；C是说要他们演示一下要在家做什么，这些都与原文不符。