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In communication, a smile is usually strong sign of friendly at-titude. [ ] A.th

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In communication, a smile is usually strong sign of friendly at-titude. [ ] A.th

In ________ communication, a smile is usually ________ strong sign of friendly at-titude.

[]

A.the,不填

B.a, the

C.不填,a

D.the, a

试题答案

答案:C