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Social practice is _____ opportunity for students to gain _____ better understanding of how society operates.
A．the; theB．the; aC．a(chǎn)n; aD．a(chǎn)n; the
C

試題分析：句意：社會實踐是學生更好的理解社會是怎么運作的機會。第一空填an，泛指“一個機會”，第二空填a，gain a better understanding of是固定詞組“更好的理解”，所以選C。
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