Leon was a postman. Every day after Leon woke up, he would feed his 37 cats. Leon didn't really want 37 cats, but one by one they had turned up on his doorstep, and Leon had taken them in.

    Every day, after feeding the cats, Leon would collect the mail from the red postboxes in the village and take it home to sort（分类）. “If only I had 37 helpers instead of 37 cats, my job would be so much easier,” Leon thought. Just then, the cats started meowing for their dinner. That gave Leon an idea. That night, Leon stayed up making 37 cat-sized postal backpacks. Each backpack fitted neatly onto a cat's back. Then, he went around to each postbox, putting signs up that read: Postbox closed. Please use the Postal Cat Service.

    The next day, Leon put a backpack on each cat and dropped off the cats around the village. Leon knew that the cats would be happy lazing around all day. He also knew that they would always come home for dinner. Leon spent the day relaxing, waiting for his helpers to return. Leon was right. The cats did return, but they did not bring home many letters. Somehow, the cats had managed to wriggle（蜿蜒而行） out of their backpacks. Or lose their letters. Or get the letters wet. “Cats are just too unreliable（不可靠的）” Leon thought. Just then, there was a scratching（刮擦声） at Leon's door. A dog was waiting to be invited inside. That gave Leon an idea.

A: Hello, I'm Barry Lai, a reporter with TV News. Would you mind ____a few questions about the events of this afternoon?

B: Not at all

A: All right then. ____were you when the birds landed?

B: I was shopping in Central.

A: How many birds do you think there were?

B: I'd say there were about 1,000 birds in all.

A: Can you tell me what ____looked like?

B: They were small brown and green birds.

A: And what did they do, exactly?

B: Well, they ____and landed in Statue Square. They stayed there for about 15 minutes before flying off again.

A: How did people react?

B: Oh, everyone was amazed. Traffic stopped ____and the police had to be called.

A: OK. Thanks very much for talking to me.

中国式过马路，是网友对部分中国人集体闯红灯现象的一种调侃，即“凑够一撮人就可以走了，和红绿灯无关”针对这种现象某媒体记者在多个路口采访闯红灯的行人，得出形成这种现象的四个基本原因：①红绿灯设置不科学，交通管理混乱；②侥幸心态；③执法力度不够；④从众心理．该记者将这次调查情况整理并绘制了如下尚不完整的统计图，请根据相关信息，解答下列问题．

（1）该记者本次一共调査了多少行人？

（2）求图1中④所在扇形的圆心角，并补全图2；

（3）在本次调查中，记者随机采访其中的一名行人，求他属于第②种情况的概率．