If a president，a philosopher，and one of the best-selling writers credited the same secret for their success，would you try to follow it too？What if the secret was something you already knew how to do？In fact，you probably do it every day.Here's what Friedrich Nietzsche wrote： "It is only ideas gained from walking that have any worth." Thomas Jefferson： "Walking is the best possible exercise." Charles Dickens："If I could not walk far and fast，I think I should just explode and die."
   Researchers have found quite a lot of connections between walking and producing ideas.A Stanford University study found that participants were 81 percent more creative when walking as opposed to sitting.According to the study，walking outside - compared with on a treadmill（跑步機）-produces the most novel and highest - quality ideas.
   The movement aspect of walking is obviously key.Our creative thinking is triggered（觸發(fā)）by physical movement，which is exactly why walking - with your dog，a friend，or alone - feeds creative thinking.
   The scenery is almost as important as the sweat.Breaking your routine with a walk can be a catalyst for fresh understanding of problems or projects.Just by going outside，you are stepping out of your familiar surroundings and your comfort zone，which is necessary if you want to open your mind to new possibilities.You can walk through a tree-filled neighborhood.You can walk through a park and observe people joking or birds singing.Being inside，you're more likely to be lifeless，which means you don't have enough energy to wonder or create.
   So instead of setting a fitness goal，why not set a creativity goal that starts with walking？Involve yourself more closely in your surroundings.Turn off your phone and give yourself the chance to be present in the world，to hear conversations and natural sounds，and to notice the way people move and the way the sun reflects in a puddle （小水坑）.

（1）How does the author introduce the topic？

B

B

A．By providing background.
B．By borrowing phrases from great minds.
C．By giving definition.
D．By presenting well-known examples.
（2）The underlined word in paragraph 4 means something

A

A

.
A．causing a change
B．stopping progress
C．catching eyes
D．interrupting creativity
（3）What can we learn from the passage？

C

C

A．Nature exploration improves fitness.
B．Walking on a treadmill brings more energy.
C．Working indoors makes people less creative.
D．Familiar surroundings encourage novel ideas.
（4）What can be a suitable title for the text？

D

D

A．Exercise in Nature.
B．Train Your Brain.
C．Develop Your Creativity.
D．Walk for Wonder.