One way to understand thousands of new words in gain good knowledge of basic word formation.
A. /
Bthe
C. a
D. one
网友回答
A. /
B. the
(答案→)C. a
D. one
解析：当某些不可数抽象名词含义具体化，而被某些修饰词修饰时，前面要加不定冠词。如a betty understanding of the passage , a good knowledge of English.