阿摩線上測驗
47 Why did workers in deep coal mines have a higher chance of survival than people on the surface?
(A)The mines were reinforced with earthquake-resistant materials.
(B)They were notified by early warning systems before the shaking started.
(C)They were closer to the unidentified fault line.
(D)Seismic vibrations are less powerful at great depths.
答案：登入後查看
統計： A(0), B(2), C(1), D(1), E(0) #3930660
統計： A(0), B(2), C(1), D(1), E(0) #3930660
