You have to believe in yourself. Self-confidence is to success.A. essentialB. combinedC.

问题补充：

You have to believe in yourself. Self-confidence is to success.

A. essential

B. combined

C. similar

D. compared

答案：

(答案→)A. essential

B. combined

C. similar

D. compared

解析：

试题关系：词义辨析。A必要的，重要的；B combine与…结合；C相似的；D be compared to比作…；句意：你要相信你自己；自信对成功来说很重要。根据句意说明A正确。