問題詳情

【題組】53. Which of the following was a problem facing the Biosphere 2 project?
(A) Lack of willing volunteers.
(B) Lack of sufficient funding.
(C) High levels of nitrogen.
(D) Imbalanced oxygen levels.

參考答案

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