問題詳情

【題組】73. Which of the following chan
(A) The structural change of the crust.
(B) The change of the ecological system
(C) The construction of towns and cities.
(D) Contamination of rivers.

參考答案

答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)