阿摩線上測驗
15. ___________, highly complicated calculations are no longer done by hand.
(A) With the introduction of computers
(B) When the computers introduced
(C) Introducing the computers
(D) The introduction of computers
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統計： A(75), B(23), C(8), D(6), E(0) #1571028
統計： A(75), B(23), C(8), D(6), E(0) #1571028
