問題詳情
【題組】75 What is the advantage of electric air travel?
(A) It is cheaper.
(B) Electric air travel is the first step towards greener air travel.
(C) Electric air travel does not help reduce CO2 emissions.
(D) It is faster.
參考答案
答案：B
難度：簡單0.75
書單：沒有書單，新增