問題詳情
24. We need to take further steps to protect our natural resources.
(A) prevent
(B) preserve
(C) reserve
(D) serve
(A) prevent
(B) preserve
(C) reserve
(D) serve
參考答案
答案：B[無官方正解]
難度：困難0.233333
統計：A(7),B(9),C(7),D(4),E(0)
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