阿摩線上測驗
25. An extreme geomagnetic storm, classed as the highest G5, could potentially impact ________, including road structure, satellites, and the power grid, the National Oceanic and Atmospheric Administration warned.
(A) infrastructure
(B) environment
(C) institution
(D) construction
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統計： A(65), B(18), C(7), D(32), E(0) #3440815
統計： A(65), B(18), C(7), D(32), E(0) #3440815
