单选题
The incredible thing about telephones ________ across the continents, but that you can recognize the other person’s voice.无
A、
is not that people can instantly talk to each other
B、
is that people can talk instantly to each other
C、
is it provides instant talking to each other
D、
is it allows people to talk instantly
【正确答案】
A
【答案解析】
无
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