小阳早晨上学看见前面有几个同学边走边弯下身子捡马路上废弃的塑料袋，然后把这些塑料袋再扔进手提的袋子里。小阳也跟着捡起来……在学校大门口，小阳看到许多同学手里拎着袋子，有的还拿着在街上捡的一些丢弃的杂物。门卫王大爷看见了直夸他们，小阳心里也挺高兴的。

（1）上述材料反映了一种什么现象？

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（2）简要说明从众的积极作用。

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（3）盲目从众有何消极影响？

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Nasreddin had a shed(棚子)behind his house. It had no lights in it. One night he went out to the shed to get his ladders(梯子)and lost his ring(戒指)there. He left the ladder, went out into the street and began to look around.
One of his friends saw him in the street outside his house, and said to him, " Hello, Nasreddin, what are you looking for"
"My ring , "answered Nasreddin. "It fell off my finger. It is a silver(银的)ring with a red stone in it." "Oh, yes. "said the friend. "I remember it. I will help you to look for it. Where did you lose it"
"In my shed."
"But why don’t you look for it there"
"Don’t be foolish! It is quite dark in my shed, how can I find my ring there Here there is light from the lamps in the street.\

Nasreddin was looking for his ring ______.
A. in his house B. in the street C. behind the house