问题
选择题
Many people agree that_______ knowledge of English is a must in ______
international trade today.
A．a; 不填
B．the; an
C．the; the
D．不填; the
答案
答案：A
本题考查冠词。a knowledge of指某一方面的知识；international trade国际贸易,不是特指 不用加定冠词。