阿摩線上測驗
44. According to the passage, which of the following is NOT a reason why climbing Mt. Everest is so challenging?
(A) Frostbites
(B) Strong winds
(C) Heavy rain
(D) Low oxygen levels
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統計： A(18), B(11), C(244), D(17), E(0) #3105332
統計： A(18), B(11), C(244), D(17), E(0) #3105332
