教育改革的核心是______．

A．内容改革
B．方法改革
C．课程改革
D．途径改革

A 32-year-old client is admitted to the unit. She states, "I’m a well-known, wealthy designer," and begins to order the nurses to prepare her bath while she orders her tray and telephones her colleagues. Her husband states that she’s too busy to eat and sleep and is losing weight. Her admitting diagnosis is bipolar disorder, manic phase. For which of the following events should the nurse plan ？（）

A．Erratic and unpredictable behavior if challenged.

B．Boredom and the need for minute-to-minute activities.

C．Rapid mood changes from elation to depression.

D．One-to-one treatment to occupy the client’s time.