题目

—________? —It's 559-4863. A.Is this your telephone B.What's that C.What color is your telephone D.What's your telephone number 答案:D目前电话已走进千家万户,成为人们重要的信息交流工具,李林接到一个电话,他主要是依据声音的 ________就听出是妈蚂打来的.为了使声音更清晰,他常把音量调大些,这相当于增大了声音的 ________.
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