問題詳情

D.Human beings have made a great progress in agriculture. However, because of the advances ofmodern irrigation techniques, the mass of crop fields 41 now at risk of soil salinization. Dueto the increasing salt content in the soil, the land could no longer 42 fertile. Fortunately,salinization is not irreversible. This can be done by flushing the top layer of dirt with more water,pushing the salt deeper into the earth and below the level of crop roots. Although there are costsassociated with salinization reversal, 43 the land degrade further would prove to be muchmore 44 in the long term. Policies need to be put in place lest it 45 too late to avertthe growing land catastrophe.
41.
(A) is
(B) are
(C) be
(D) being

參考答案

答案：D[無官方正解]
難度：適中0.5
統計：A(2),B(0),C(2),D(3),E(0) #
個人：尚未作答 書單：沒有書單，新增

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