第1个回答 2013-11-07
1.Writer entered art gallery--saw notice2.Forbade--people touch exhibits--dangerous3.Exhibition--consisted--moving sculpture4.Writer saw--long thin wires--metal spheres againse wall5.Spheres attracted--repelled each other6.Tall structures--centre of hall--contained coloured lights7.On and off8.Sparks emitted--black boxes9.Red lamps--on and off