阿摩線上測驗
20. Which of the following characters is not unique to Metazoa?
(A) Multicellularity
(B)Having a nervous system
(C) An extracellular matrix made up by collagen
(D) Movement by muscle
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統計： A(0), B(0), C(1), D(0), E(0) #3386877
統計： A(0), B(0), C(1), D(0), E(0) #3386877
