问题
选择题
People love the convenience of bottled water, but if they ________ the problem it causes, they ________ try carrying water in a reusable steel container instead of plastic.
A．realized; will
B．had realized; will
C．realized; would
D．have realized; would
答案
答案：C
C 考察虚拟语气。句义：人们喜欢瓶装水的便利，但如果他们意识到瓶装水会导致的问题，他们就会使用可循环的铁罐代替塑料瓶来装水。If虚拟句表示对现在的虚拟假设。故C正确。