問題詳情

48 How does one know that the earth is breathing?
(A) Because satellite images show no change in the green areas.
(B) Because satellite images show that the plants’ breathing activities happen underwater.
(C) Because satellite images show that plants are absorbing CO2 and producing oxygen.
(D) Because satellite images show overuse of fossil fuels.

參考答案

答案:C
難度:簡單0.710938
統計:A(7),B(23),C(91),D(4),E(0)

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