____,television has played an important role in modern life.A.As long as it is known B.What is known to allC.Since it is known D.As is known to all我感觉答案应该是选D,因为可以解释为As作主语引导定语从句位于句首,谓语动

____,television has played an important role in modern life.
A.As long as it is known B.What is known to all
C.Since it is known D.As is known to all
我感觉答案应该是选D,因为可以解释为As作主语引导定语从句位于句首,谓语动词为系动词,很合适.C应该用过去式,B是个主语从句,放这里句子成分不合法.
没弄懂A是个什么情况.

你的选择是对的,答案为D.A中的As long as是个固定短语,意思是“只要”,也可以说so long as.A项的意思是“只要众所周知”,不和题意.排除掉. 本句句意：众所周知,电视在现代生活中起着重要作用.希望能帮到你,如满意,请采纳为“满意答案”.

A中as long as 意为“只要”，是条件状语。
希望能帮到你

A 众所周知

as long as 是只要的意思 A选项没有这个说法 这题答案是选D