单选题Bill was　　　the telephone.A.con

问题补充：

单选题Billwasthetelephone.A.considered inventingB.considered to have discoveredC.considering having inventedD.considered to have invented

答案：

D解析本题考查consider的用法，be considered to have done意为“被认为已经干了……”合乎题意。(1)consider作“考虑”讲时可用consider+n./pron. doing结构。(2)consider作“认为”讲时不可用consider doing 结构。(3)consider sb./sth.(to be)+n./adj.认为某人/物怎样，该复合结构中to be 可省略。(4)be considered to have done认为某人已经干了某事。