The law about banning using thin plastic bags came into from 1st Jane this year.
A. existence
B. power
C. sight
D. effect
网友回答
A. existence
B. power
C. sight
(答案→)D. effect
解析：句意：禁止使用薄塑料袋的法律从今年6月1日起生效。e into existence 开始存在；e into power上台执政;e into effect开始生效；开始实施；e to light显露出来；e into sight映入眼帘。根据只有D项符合题意。