問題詳情
20. Gasoline-powered, internal-combustion-engine-propelled vehicles had beenaround for more than a quarter-century by the start of the 1920s, but not untilthat decade they became a central factor in the everyday lives of ordinaryAmericans. Mass production, together with innovations in design, engineering,manufacture, and sales brought a new or used car, truck, or tractor within thereach of most people.
(A)had been
(B)a quarter-century
(C)they became
(D)brought
(E)reach of
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增