问题
选择题
(2013·嘉兴一中月考)Many people agree that ________ knowledge of English is a must in ________ international trade today.
A．the；an
B．a；/
C．the；the
D．/；the
答案
答案：B
a knowledge of为固定表达，意义“……方面的知识”，trade为不可数名词，表示泛指时不用冠词。