It is said that ( )electricity was discovered in the 19th century.A.an B.the C.a D.不填

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It is said that ( )electricity was discovered in the 19th century.A.an B.the C.a D.不填

It is said that ( )electricity was discovered in the 19th century.A.an B.the C.a D.不填
It is said that ( )electricity was discovered in the 19th century.A.an B.the C.a D.不填

It is said that ( )electricity was discovered in the 19th century.A.an B.the C.a D.不填
D
电是一个相当于专属名词,前面有“the”的一般表示特指某一个事物,这里的电是总称,谈不上特指.

D.不填
electricity是不可数名词,表示泛指时,不用冠词.

D

选B

选D。
电是不可数名词,a与an都是用于可数名词前,所以不可选。而且电在这个句子里并非特指,所以不需要加the。希望你能满意!

x选D。