--- Mom, I’ m going to the graduation dance tonight but I don’t think I look attractive enough.

--- Oh, darling, don’ t worry. _______.

A．They don’t know what beauty is

B．Nobody will care about it

C．You look perfect the way you are

D．Impossible is nothing

人体曲面的校正方法除外哪项（）

A.组织空气比法

B.组织最大剂量比法

C.有效源皮距法

D.有效衰减系数法

E.同等剂量曲线移动法