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THE WORLD'S FIRST ELECTRIC COMPUTER ______ BY THE...
THE WORLD'S FIRST ELECTRIC COMPUTER ______ BY THE UNIVERSITY OF PEN...
BAI KIEM TRA 1TIET SO 2 HOC KY 1 LOP2
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24.The world's first electric computer ______ by the University of Pennsylvania in 1946.
A. has been built B. was built C. is built D. had been built
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BAI KIEM TRA 1TIET SO 2 HOC KY 1 LOP2