题目内容：

Some people collect postage stamps -- the small pieces of paper you place on letters or postcards before mailing them. Other people collect works of art or musical instruments. But a man in the American state of Maryland collects secrets.

For the past 10 years, people from throughout the world have been sending Frank Warren postcards and other objects with secrets written on them. He now has a million secrets. Mr. Warren lives in Germantown, Maryland, near Washington, D.C. Ten years ago, he created an art project he calls "PostSecret."

"I invited strangers from all around the world to write down their deepest confession（自白） on a postcard, something they'd never told anyone else before, but something that was true. And I asked them to mail it to my home anonymously(匿名地)."People send him postcards, other objects and emails telling their secrets. Every Sunday, he chooses 10 secrets and puts them on the PostSecret website.

Mr. Warren says he created PostSecret so people would have a safe place in which to share their secrets." I was struggling with secrets in my own life. And it was by creating this safe place where others could share their secrets with me without judgment -- anonymously -- I think that space was something I needed just as much as they did."

He has published six books full of the secrets people have shared with him. One secret in each book is his. The project itself was once one of Mr. Warren's secrets. His wife Jan did not know exactly what he was doing until the first book was published.

Some people tell Frank Warren of their secret desire to kill themselves. So he and the PostSecret community have raised more than $1 million to help prevent suicides（自杀）.

1.How many secrets can Frank Warren get per year on average in the past 10 year?

A. About 100 thousand secrets.

B. About a million secrets.

C. About a billion secrets.

D. About 10 thousand secrets.

2.What can we do on the PostSecret website?

A. We can get some help when we are in trouble.

B. We can learn about some secrets of other people.

C. We can express our views freely.

D. We can put all our secrets on the website.

3.Why did Mr. Warren create PostSecret?

A. To keep his own secrets.

B. To find out more secrets of other people.

C. To offer a good place to share secrets.

D. To help other people get out of their trouble.

4.What can be inferred from the passage?

A. Mr. Warren probably once saved some people’s life.

B. Mr. Warren’s wife helped him to create PostSecret.

C. Mr. Warren makes many friends because of PostSecret.

D. Mr. Warren is an open, easy-going and generous man.