39. In which of the following lists do all members have a C=O bond?
(A) ester, aldehyde, secondary alcohol, ketone;
(B) any alcohol, ether, ester;
(C) secondary alcohol, ketone, aldehyde ;
(D) carboxylic acid, ether, tertiary alcohol ;
(E) ester, aldehyde, ketone

1. 題目解析題目要求我們找出一個選項...