题目内容：

    Throughout our daily lives, we have known plenty of people and will know more. But how can we tell if someone is trustworthy? In a paper published recently in the Journal of Personality and Social Psychology, researcher gave us the answer.

The researchers asked 401 adults from the United States to fill out a questionnaire measuring their guilt-proneness(内疚倾向) in different situations as well as several other qualities, and then play a short online game. In this game, Player 1 is given $1, which they can choose to give to Player2. Any money given to Player 2 is then automatically increased to $2.50. Player 2 can then decide whether to keep all of the money or behave in a trustworthy way by returning a portion of the money to Player 1. The researchers found more guilt-prone people were more likely to share the money with Player1. Actually, in follow-up studies, guilt-proneness predicted trustworthiness better than other personality qualities the researchers measured.

Why might guilt lead to trustworthy behavior? The researchers found people who were guilt-prone also reported feeling an obligation to act in ethical(合乎道德的) and responsible ways while interacting(互动) with their partners in the game. People who are guilt-prone tend to avoid engaging in behavior that might harm or disappoint others. If they do something bad, guilt encourages them to try to make things right again.

Then， how can we use this research to ascertain whether someone is trustworthy? “One way to do this might be observe how they respond to experience regret,” lead author Emma Levine, assistant professor at the University of Chicago Levine, explains. Another way is to ask them to describe a difficult dilemma they faced in the past, suggests co-author Taya Cohen, associate professor at Carnegie Mellon University. This is particularly effective, Cohen and her colleagues have found, because it allows us to see if they’re concerned about the effects their actions have on others.

1.What may make others feel that we are reliable according to the text?

A.Our good qualities to help them out.

B.Our tendency to experience guilt.

C.Our kind attitude towards them.

D.Our team spirit in the game.

2.What may connect guilt with trustworthy behavior?

A.A sense of responsibility.

B.A feeling of disappointment.

C.The way one interacts with others.

D.The ability to tell right from wrong.

3.What does the underlined word “ascertain” in the last paragraph mean?

A.Ask B.Express

C.Describe D.Determine

4.How is the text organized and developed?

A.By providing background.

B.By making a lot of comparisons.

C.By answering the raised questions.

D.By analyzing effects of guilt-proneness.