◎ 题干
Quantities of water________for cooling in the only one of the plants that________steel.
[     ]
A. has been needed; produces
B. are needed; produces
C. is needed; produce
D. have been needed; produce
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Quantities of water________for cooling in the only one of the plants that________steel. [ ]A. has been needed; producesB. are needed; producesC. is needed;…”主要考查了你对  【一般现在时的被动语态】【主谓一致】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。