填空题 The construction of massive dams and irrigation projects do more good than harm.

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【正确答案】 1、N    
【答案解析】该句句意为:巨坝和灌溉工程的建设好处多于坏处。解题依据为本文第三段第二句话But many countries continue to build massive dams and irrigation systems,even though such projects can create more problems than they fix.(虽然产生更多问题,许多国家仍继续建巨坝和灌溉工程。)由此可知,坏处多于好处,与原文之义不合。