Holdingdoorsopen，pickinguprubbish，thankingpeople…theseactsofkindnessseemverysmall．ButstudentsatTibbettsMiddleSchoolknowthatit'sthesmallactsthatmaketheworldabetterplace．Eighth-gradersfromNewMexico，US，took

　　Holding doors open，picking up rubbish，thanking people …these acts of kindness seem very small．But students at Tibbetts Middle School know that it's the small acts that make the world a better place．

　　Eighth-graders from New Mexico，US，took part in the Random （随意） Acts of Kindness Week from Feb 10to 14．During the week，they tried their best to do kind things for others，or for the environment．

　　Celeste Murray，an English teacher at the school，started the activity．"I believe the world is changed by little things，"she told the local newspaper．Over the week，Murray said she has seen changes in her class．Previously，she asked her students to push the chairs in after class．Now，the students do it by themselves．"The teachers will have less work，"said Elisea Castaneda，one of Murray's students．

　　Jordin Marshall，another eighth-grader，spent the week giving out praise （赞扬）．"It makes that person's day （使那个人开心），"she said．"Besides helping others，the activity made students feel that they can make a difference，"Murray said．

　　Eighth-grader Haley Echols decided to continue to do at least one act of kindness every week．She believes her acts could encourage others．

　　56．Random Acts of Kindness Week was started by___．

　　A．some eighth-graders

　　B．the school

　　C．a teacher

　　D．some parents

　　57．What kind of act of kindness is not mentioned？___

　　A．Giving out praise．

　　B．Holding doors open．

　　C．Picking up rubbish．

　　D．Donating money．

　　58．The underlined word"Previously"means"___"．

　　A．since then

　　B．before

　　C．later

　　D．at present

　　59．Elisea thinks if students push in chairs after class，___．

　　A．teachers will do less work

　　B．the environment will be better

　　C．other students'time can be saved

　　D．no rubbish will be left．