問題詳情

50. Which of following is NOT the ways we can go green?
(A) Always take the stairs, instead of the elevator(電梯).
(B) Always turn off lights before leaving.
(C) Eat more meat and seasonal food.
(D) Blackboards and chalk are eco-friendly.

參考答案

答案:C
難度:計算中-1
書單:沒有書單,新增

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