問題詳情
28. (1) Other gardeners have adopted a system called xeriscaping.(2) The approach aims to make the most of available water and sunlight in a self-sustaining way byrecycling materials.(3) In California, water shortages caused by over-use are so acute that some gardeners have resorted todyeing their lawns green.(4) The system involves grouping plants according to their watering needs and concentrating ondrought-tolerant plants.(5) In Australia, however, another system called permaculture was pioneered by Bill Mollison.
(A) 31452
(B) 13452
(C) 21543
(D) 54321
(A) 31452
(B) 13452
(C) 21543
(D) 54321
參考答案
答案：A
難度：適中0.4
統計：A(6),B(3),C(5),D(0),E(0)
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