问题
选择题
In communication, a smile is usually _____ strong sign of a friendly and _____ open attitude. [ ]
A. the, /
B. a, an
C. a, /
D. the, an
答案
答案：C
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In communication, a smile is usually _____ strong sign of a friendly and _____ open attitude. [ ]
A. the, /
B. a, an
C. a, /
D. the, an
答案：C