问题
选择题
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
答案
答案：D
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。