His brother likes history very much. He knows a lot about Chinese history, especially hi

His brother likes history very much. He knows a lot about Chinese history, especially history of social development.
A. /; / ; the
B. / ; the ; /
C. the ; / ; /
D. the ; / ; the

(答案→)A. /; / ; theB. / ; the ; /C. the ; / ; /D. the ; / ; the解析：考查定冠词的用法。在学科前面一般不用定冠词，如chemistry, physics, history, geography等，第二空“中国历史”，是泛指，不是特指某段中国历史，因此也不用定冠词，第三个空history后面有of social development来修饰，因此是特指，要加定冠词。

这个解释是对的