when was the ...invented? who were they invented by? what ane they used for?造一对话.
题目
when was the ...invented? who were they invented by? what ane they used for?造一对话.
如上
答案
A: When was the telephone invented?
B: It was ivented about 1 hundred years ago.
A: Who were they invented by?
B: They were invented by Bell.
A: What are they used for?
B: They are used for calling people far away of you, so we can get iontouch with people easier.
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