學士後西醫物理及化學題庫下載題庫

90. What monomer(s) is/are needed to synthesize the polymer shown below?
 I. HOCH₂CH₂OH II. HOOCCH₂CH₂COOH III. HOCH₂CH₂COOH IV. HOCH=CHOH V. HOOCCH=CHCOOH
(A) II
(B) III
(C) I and II
(D) IV and V
(E) II and III