12. It is a well-known marine biological phenomenon that clownfish live in ______ with sea
anemones.
(A) symbiosis
(B) prosthesis
(C) thrombosis
(D) hypothesis
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統計: A(68), B(11), C(13), D(5), E(0) #2920174
統計: A(68), B(11), C(13), D(5), E(0) #2920174