问题
选择题
Many people agree that ______ knowledge of English is a must in _______ international trade today.
A.the, an
B.a, 不填
C.the, the
D.不填, the
答案
答案:B
knowledge 虽为不可数名词,但其前却可用不定冠词,表示某种程度的知识,有类似some的意思;第二空不填冠词,是因为trade 为不可数名词,表示泛指时不用冠词。