题目：
多选题
What should prepare for the patient who is going to take an appendectomy?
- A. Shaving the abdominal area.
- B. Giving enema.
- C. No drinking and eating after midnight on the day befor the surgery.
- D. Give pre-medications before the patient is sent to the Operating Room.
- E. Ask the patient to sign the consent.
答案：
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