问一题

qwrersaa

Alexander Graham Bell (A. recieved) a patent (B. in 1880) for (C.the ideas of) using light (D to relay) sound via a telephone.

apple1

答案更好，因为是patent,so here the idea=the invention

patents-------ideas/inventions

here is singular,so should be "the idea"

qwrersaa

它的解释是改为the idea of, 因为of 在此所表示的功能为同位格的引介字,即the idea=using light to.......。

我看不太懂它的解释。