阿摩線上測驗
39. According to the passage, one possible cause of the movement of the tectonic plates is __________.
(A) the expansion of the ocean
(B) the position of the Moon
(C) gravitational pull
(D) wave motion
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統計： A(8), B(5), C(34), D(9), E(0) #1272709
統計： A(8), B(5), C(34), D(9), E(0) #1272709