阿摩線上測驗
複選題
47 Which of the following statements is true about volcanic activities in Paragraph Two?
(A) They have been on the increase over the years.
(B) They are no more frequent than they used to be.
(C) They increase as the human population becomes larger.
(D) They are more frequently observed as a result of increased population.
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統計： A(62), B(129), C(91), D(172), E(0) #1651409
統計： A(62), B(129), C(91), D(172), E(0) #1651409
