患者，男，缺失，上颌前突，义齿人工牙排列方法不妥的是（）

A．正常排列，恢复美观

B．磨改唇面排对刃

C．加厚腭侧基托，下前牙咬到腭侧基托上

D．加厚舌面，以恢复咬合

E．人工牙排向腭侧一些，唇侧不做基托

Which of the following concepts would the nurse incorporate into the plan of care for a 4-year-old child to psychologically prepare the child for cardiac catheterization（）

A. Anxiety decreases when a preschooler is protected from learning about unpleasant events.

B. Preschoolers are unable to understand the procedure.

C. Little psychological preparation can be given to preschoolers.

D. Preparation is a joint responsibility of the physician, parents, and nurse.