B Honesty may well be the policy, but it often deserts us when no one is watching, psychologists report today. Experiments with an honesty box to collect payments for hot drinks show that people are better at paying up when under the gaze（注视) of a pair of eyes. The surprise was that the eyes were not real, but photographed. Researchers at Newcastle University set up the experiment in secret. They attached a poster to a cupboard of mugs above an-honesty box alongside a kettle, with tea, coffee and milk. Over 10 weeks, they alternated each week between images of eyes and pictures of flowers. Dr. Bateson, a behavioral biologist and leader of the study, said that even though the eyes were not real they still seemed to make people behave more honestly. They effect may arise from behavioral characteristics that developed as early humans formed social groups that increased their chances of survival. Individuals had to co-operate for the good of the group, rather than act selfishly. "If nobody is watching us it is in our interests to behave selfishly. But when we think we're being watched we should behave better, so people see us as co-operative and behave the same way towards us, "Dr. Bateson said. "We thought we'd get a slight effect with eyes, but it was quite striking how much difference they made. Even at a subconscious（潜意识的) level, it seems people respond to eyes, and that might be because eyes send a strong biological signal we have evolved（进化) to respond to." The finding, which researchers believe sheds light on our evolutionary past, could be turned to practical use. The psychologists say images of eyes could promote ticket sales on public transport and improve monitor systems to prevent antisocial behavior.

This passage is mainly about _______.

A. the policy of honesty       B. an honesty box to collect money C. evolution on honesty        D. an experiment on honesty

The reason for doing the experiment secretly is that the researchers _________.

A. wanted to get a comparatively more exact result B. had known they wanted to do something illegally C. meant to get the co-operation of their colleagues D. intended to sell the hot drinks at a higher price

People behave honestly under watchful gaze of eyes because _________.

A. they want to leave a good impression  B. they fear to be laughed at by others C. they've got the nature through evolution D. they take the photo for a real pair of eyes

Images of a pair of eyes can be applied to all except _____.

A. tickets sales on public transport    B. cold drink sales in public places C. places with “No spitting!” signs     D. Christmas decorations in one’s home

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