問題詳情

59. ( ) According to the article, which statement is true?
(A) Edison had the patent on the light bulb in 1878.
(B) Swan sold his invention in the U.S.A.
(C) The inventor getting a patent in a country can sell his or her invention in many countries.
(D) It will cost an inventor a lot of money to get the patent on an invention in the U.S.A.

參考答案

答案:C[無官方正解]
難度:適中0.5
統計:A(0),B(1),C(2),D(0),E(0)

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