阿摩線上測驗
3. Many animals use ______ as a defense mechanism to avoid predators or to ambush prey.
(A) compunction
(B) camouflage
(C) circumference
(D) cache
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統計： A(1), B(63), C(5), D(5), E(0) #3230419
統計： A(1), B(63), C(5), D(5), E(0) #3230419
