2. Scientists speculate that the greatest impact on the increasing global temperature of the earth is caused by humans.
(A) digress
(B) contemplate
(C) detract
(D) squander
(E) dissent
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統計: A(2), B(33), C(2), D(4), E(2) #1021163
統計: A(2), B(33), C(2), D(4), E(2) #1021163