答对三题以上（含三题）才给予加分；请在完成前五部分的前提下完成该部分  阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。 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 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 (轮流替换) 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. The effect may result 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, by it was quite striking how much difference they made. Even at a subconscious 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 increase ticket sales on public transport and improve monitor systems to prevent antisocial behavior. 小题1:This passage is mainly about ____________.
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