Youmaybesurprisedtolearnthatoneofthebeststepsyoucantaketoprotectyourhealthistostepoutsideandspendsometimeinthegrassdirtandwater.

Ourancestorsenjoyedthehealingpowerofnatureandnowscientistsarestartingtocatchup.Accordingtoresearchinrecentyearsjusthavingaviewofnaturehasbeenshowntoimprovehospitalpatients’recoveryandreduceillnessratesamongofficeworkers.Alsoexposuretowildlifehorsebackridinghikingcampingandfarmscanbehelpfulforavarietyofhealthconditionsinadultsandchildren.

Muchofthistypeofresearchisfocusingonchildrenandinfactanentiremovementhasquicklydevelopedtoconnectkidswiththehealingpowerofnature.

Obesity(肥胖).Ratesofchildhoodobesityhavegrownsharplyinrecentyearsandthisispartlybecauseofreducedoutdooractivitytime.Increasingthetimestudentsspendlearningaboutnaturebothinandoutsidetheclassroomwouldhelpsolvethisproblem.Suchlessonsareoftenmoreattractiveforstudentsandoftenleadthemtobecomemoreactiveoutside.

Attentiondeficithyperactivitydisorder(ADHD)(注意力缺失症)．Exposuretoordinarynaturalsettingsinthecourseofcommonafter­schoolandweekendactivitiesmaybeeffectiveinreducingattentiondeficitsymptomsinchildren.Participationingreenactivities—suchasnaturewalks—helpedADHDpatientsfromawiderangeofbackgroundstostayfocusedandcompletetasks.

Stress.Accesstonatureevenhouseplantscanhelpchildrencopewithstressdepressionandseasonalemotionaldisorder.Majordepressionrequiresmedicaltreatmentbutphysicalactivityespeciallyoutdoorscanhelpeasesymptoms.Foryouraveragecaseofwinterbluesexpertssuggestspendingtimeoutsideeverydayandifpossibletakingthefamilytoasunnyvacationspotinmid­winter.

Expertsemphasizethatyouneedn’tgotowildernesspreservestoenjoynature’sbenefits—simplywalkinginacityparkorgrowinginarooftopgardencanmakeadifference.

50．Whatcanweinferfromthefirsttwoparagraphs?

A.Ancientpeoplewerenotfamiliarwiththehealingpowerofnature.

B.Modernpeoplearenotfamiliarwiththehealingpowerofnature.

C.Thehealingpowerofnatureworksbet