Quantities of water for cooling in the only one of the factories that steel.
A. has been needed；produces
B. have been needed；produce
C. is needed；produce
D. are needed；produces
网友回答
A. has been needed；produces
B. have been needed；produce
C. is needed；produce
(答案→)D. are needed；produces
解析： 考查主谓一致，Quantities of+名词（可数或不可数）做主语时，谓语动词用复数，所以第一空应用复数形式，可排除A和C，第二空，one前面有the only修饰，故从句的动词应用单数，所以选D。