[audioFiles]audio_eusm_0117(20106)[/audioFiles]A、Speak very slowly but loudly.

游客2024-06-06  0

问题  

选项 A、Speak very slowly but loudly.
B、Ask questions frequently.
C、Vary pitch, volume and speed of speech.
D、Keep the speech clear and concise.

答案 C

解析
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