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The general principle for the effective business letter-writing can be summed up in the “three C`s”. in the other words, letters should be :clearness、conciseness、courtesy、correctness、completeness、consideration(the “you” attitude)
A.正确
B.错误

参考答案


完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块