阿摩線上測驗
31、 What is the main cause of SCDS?
(A) The loss of hearing and sight.
(B) The noise of the moving of the eyeballs.
(C) The thinness of one of the bones in the ear.
(D) The absence of one of the three ear canals.
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統計： A(5), B(8), C(63), D(6), E(0) #1301131
統計： A(5), B(8), C(63), D(6), E(0) #1301131
