Gas lamps became obsolete when electric lighting became possiblE.
A.useless
B.fashionable
C.outdated
D.unpopular

A.A.useless
B.fashionable
C.outdated
D.unpopular

【参考答案】

C
正确答案是：C。本题考查的是对近义形容词的辨析。本句话的意思是：“当人们有可能用上电灯时，煤气灯就过时了。”......

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