阿摩線上測驗
34 There are several ways to_____ our natural resources, including the reduction of paper usage, the
recycling of trash, and the use of public transportation.
(A)prevent
(B) con serve
(C)predict
(D) construct
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統計： A(41), B(81), C(13), D(14), E(0) #1304860
統計： A(41), B(81), C(13), D(14), E(0) #1304860
