47. What is this reading mainly about?
(A) Experiences of Arctic explorers
(B)The cause of the common cold
(C) Experiences in concentration camps
(D) The effects of dampness and cold
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統計: A(27), B(418), C(33), D(49), E(0) #1979864
統計: A(27), B(418), C(33), D(49), E(0) #1979864