This training course is open only to dieters undertaking to starve themselves _________their own free will.
A． at
B． against
C． of
D． with
正确答案：C
题干的意思是：“这样的训练课程仅对那些自愿决定挨饿的节食者开放”atone’sown(sweet)will的意思是“随心所欲的”；againstone’swill的意思是“违背自己的意愿”；ofone’sownfreewill的意思是“非强迫的自愿的”；而withawill意为“乐意地热情地”
