问题
选择题
In this hotel, the bread and butter ______served for breakfast. Meanwhile, a knife and fork _____very useful for a foreigner.
A．is; is
B．are; are
C．is; are
D．are; is
答案
答案：A
根据意义一致原则，用and连接的两个单数名词在意义上指同一个人、物或概念时，谓语动词用单数，这时and后面的名词前不用介词。
