Why was life hundreds of years ago much harder than it is today? Because ____.( )
A.there was not modern people B.there was not modern machines C.there was not modern medicine D.both B and C正确答案D
Why was life hundreds of years ago much harder than it is today? Because ____.( )
A.there was not modern people B.there was not modern machines C.there was not modern medicine D.both B and C正确答案D
