China’s economic development has made rapid progress in the past 10 years, and young peop

China’s economic development has made rapid progress in the past 10 years, and young people have made great contribution to this progress.
A. a; a
B. the; /
C. /; a
D. /; /

A. a; aB. the; /(答案→)C. /; aD. /; /解析：考查冠词。make progress取得进步；make a contribution to对……作贡献，根据句意选C。

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