43. Which of the following compounds can not be a monomer of an addition polymer?
(A) styrene
(B) ethyne
(C) adenine (6-aminopurine)
(D) 2-chloro-1,3-butadiene
(E) methyl 2-methylpropenoate (methyl methacrylate)

1. 題目解析題目要求我們找出哪一種化...