With look of disappointment, he left the Student Union office. Without knowledge of photographing, he missed the chance to be an editor of Babel.
A. the, the
B. a, a
C. the, a
D. /, the
网友回答
A. the, the
(答案→)B. a, a
C. the, a
D. /, the
解析：句意：带着一种失望表情，他离开了学生会办公室，没有照相的知识，他失去了当一名Babel记者的机会。一种表情用不定冠词，knowledge后跟of sth 时，它的前面用不定冠词；表示一种知识，故选B。