阅读下面的短文，从每题所给的四个选项(A、B、C、D)中，选出最佳选项。
D
Dr Wiseman started “the laugh lab” project in September 2001. It is the largest study of humour. Participants(参加者)are invited to log onto the laugh lab website, give a few personal details, tell their favourite jokes and judge the jokes told by other people.
The project will last for a year, and the organizers hope to finally discover the world's funniest joke. But there is also a serious purpose. The researchers want to know what people from different nations and cultures find funny. And they want to find out the differences between the male and female sense of humour. The idea is that if we want to understand each other, we have to find out what makes us laugh.
This is a subject that has long interested psychologists(心理学家)and philosophers(哲学家). Most of the time, people are not completely honest. We do things that society expects us to and say things that help us get what we want. But laughing cannot be controlled. When we laugh, we tell the truth about ourselves.
By December 2001 over 10,000 jokes had been submitted. This gave the scientists enough evidence(证据)to make early conclusions. It seems that men and women do have different senses of humor, for instance.
“Our findings show the major differences in the ways in which males and females use humour，”said Dr Wiseman. “Males use humour to appear superior(优越)to others, while women are more skilled in languages and prefer word play.”
Researchers also found that there really is such a thing as a national sense of humour. The British enjoy what is usually called “toilet humor”. But the French like their jokes short and sharp：“You're a high priced lawyer. Will you answer to questions for $ 500？”“Yes. What's the second question？”
The Germans are famous for not having a sense of humor. But the survey found that German participants were more likely to find submitted jokes funny than any other nationality. Perhaps that provides the point. Is this joke funny? I don't know, but let's say yes, just to be safe.
Dr Wiseman and his workmates also submitted jokes created by computer. But none of those who took part in the survey found any of them amusing. Perhaps this is relief. Computers already seem like they can do everything. At least they should leave the funny stuff to us.
Scientists started “the laugh lab” project________.

A．to find the funniest joke in European countries.

B．to know what funny people are from different nations and cultures

C．to find out the differences between the male and female sense of humor

D．to get more personal details about participants

We can infer from the passage that________.

A．most of the people all over the world are completely honest

B．psychologists and philosophers take interest in “the laugh lab” project

C．ordinary people are not interested in “the laugh lab” project at all

D．people tell the truth about themselves only when they laugh

What is the main idea of the 4th and 5th paragraph?

A．Man and woman have different senses of humour.

B．Male and female have similar senses of humour.

C．About 10,000 jokes have been submitted from September 2001 to December 2001.

D．Scientists have collected enough evidence to make conclusions.

The writer gave the examples of the British, the French and the Germans________.

A．to show the French people have a better sense of humour

B．to prove the British people have a sense of“toilet humour”

C．to show people from different nations have different senses of humour

D．to prove that the Germans have no sense of humour