阅读理解。 Honesty is the best policy, as th

问题：

阅读理解。

     Honesty is the best policy, as the English saying goes. Unfortunately, honesty often leaves us when no

one is watching, British psychologists reported last week.

Researchers at UK's Newcastle University set up an experiment in their psychology department's coffee

room.

     They set a kettle, with tea, coffee and milk on the counter and hung up a sign listing the price for drinks. People helping themselves to a cup of tea were supposed to put a few cents in the box nearby.

     The scientists hung a poster above the money box, and changed each week between pictures of

gazing (注视的) eyes and pictures of flowers. The researchers found that staff paid 2.76 times more for

their drinks when the image of the eyes was hung.

     "We were shocked by the size of the effect," said Gilbert Roberts, one of the researchers.

     Eyes are known to be a powerful perceptual (知觉的) signal for humans, scientists say.

     "Even though the eyes were not real, they still seemed to make people behave more honestly," said

Melissa Bateson, a behavioral biologist and leader of the study.

     Researchers believe the effect throws light on our evolutionary(进化的) past. It may arise from

behavioral characteristics that developed when early humans formed social groups to increase their

chances of survival. For social groups to work, individuals had to co-operate, rather than act selfishly.

"There's an argument that if nobody is watching us, it is in our interests to behave selfishly. But when

we're being watched we should behave better. So people see us as co-operative and behave the same

way towards us," Bateson said.

     The new finding indicates that people have a striking response to eyes. That might be because eyes

and faces send a strong biological signal we have evolved to respond to, Bateson said.

     The finding could be put to practical use. For example, images of eyes could ensure ticket sales on

public transport and improve surveillance(监视) systems to deter antisocial (反社会) behaviour.

1. The story is written mainly to __________.

A. warn you to behave honestly whether you are alone or not

B. explain the root of cheating in exams with no teachers present

C. describe how the experiment in Newcastle University worked

D. inform us of a strong reaction that people have to eyes

2. The experiment carried out in Newcastle University made researchers think that _______.

A. honesty is not the best policy

B. evolution has a big influence on our behavior

C. humans have to form social groups to survive

D. people are more relaxed when not being watched

3. From the text, we know that ________.

A. no one acts selfishly when being watched

B. the function of eyes is not only biological but social

C. the image of eyes worked as well as the picture of flowers

D. a waiter was there serving people drinks in the experiment