阿摩線上測驗
42.According to Professor William Ruddiman, _______________.
(A) the Sun has been keeping the temperature steady
(B) the Sun has influenced most of that natural cooling
(C) humans have had a significant influence on the earth’s climate
(D) a human cooling cancelled most of the natural warming
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統計： A(19), B(29), C(72), D(19), E(0) #802440
統計： A(19), B(29), C(72), D(19), E(0) #802440