actually helps.Researchers have found that looking at natural scenery makes people forward­thinking in their decision­making.

　　In one experiment，the researchers offered immediate or delayed rewards to three groups of volunteers-a group who had viewed photos of natural scenes，a group who had viewed urban photos，and a group who didn't view any photos at all.All the volunteers are offered two types of rewards：100 euros now or a larger sum in 90 days' time.

　　A clear distinction of the results appeared.Participants viewing or exploring nature were far more willing to wait for an extra 20,30 or 40 euros than the other two groups-showing that their exposure to natural beauty may have made them more willing to accept delayed rewards.

　　The researchers say the psychological benefit could be because nature moves at a slower pace altogether，while city life fills us with pressure to acquire status，material goods and friendship anxiously.When we take a step back and see the environment as a whole，all those tiny struggles will disappear into the time zone of the Earth itself.

　　As the old Greek saying goes，a society grows great when old people plant trees whose shade they know they shall never sit in.We might all be doing our grandchildren a favor if we spend less time running after personal interests，and more time planting those trees.

　　语篇解读　本文是一篇说明文。当人们有烦恼时喜欢户外活动，而经过研究发现，观看自然风景对于人们摆脱压力是非常有益的。

　　1．When people are in trouble，they often tend to________.

　　A．solve it quickly without delay

　　B．ignore all their personal troubles

　　C．take various outdoor activities

　　D．see photos with beautiful scenery at home

　　解析：　细节理解题。根据第一段第一句"To get rid of daily troubles，lots of people escape to the outdoors-maybe a weekend bike ride，a fishing trip or a hike-to clear their minds."可知，当人们有烦恼时，他们常常参加各种各样的户外活动。

　　答案：　C

　　2．Why are those exposed to natural beauty more willing to accept delayed rewards?

　　A．Because they may become rich quickly.

　　B．Because they may forget about their personal troubles.

　　C．Because they may worry about the environment.

　　D．Because they may get some exercise and become healthy.

解析：　推理判断题。根据第三段中的"showing that their exposure to natural beauty may