In the new curriculum, some courses are        , while others are optional for middle school students.

A．traditional

B．compulsory

C．impressive

D．significant

Which of the following home regimens should the nurse suggest to relieve itching in children with chicken pox（）

A. Generous amounts of fine baby powder.

B. Oatmeal preparation baths.

C. Terrycloth towels moistened with hydrogen peroxide.

D. Cool compresses moistened with a weak salt solution.