問題詳情
【題組】49.According to the passage, natural evolutionary change is different from changes caused by humans in that changes caused by humans
(A)are occurring at a much faster rate
(B)are less devastating to most species
(C)affect fewer ecosystems
(D) are reversible
參考答案
答案：A
難度：適中0.666667
統計：A(4),B(0),C(1),D(1),E(0)