问题详情

The sentence in the sixth paragraph "Similar signals also. . , for disease" implies that ______
A．We tend to accept that becoming old is inevitable.
B．We usually have no doubts about doctor"s diagnosis.
C．Illness often leaves us in a difficult situation.
D．Fixed ideas about illnesses can worsen the situation.请帮忙给出正确答案和分析，谢谢！