4. The city’s high _____ poses a threat to many visitors as they find it difficult to adjust to the thin
air and low temperature.
(A) latitude
(B) altitude
(C) aptitude
(D) attitude
(E) longitude
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統計: A(5), B(30), C(9), D(0), E(0) #3247819
統計: A(5), B(30), C(9), D(0), E(0) #3247819