题目内容：
Questionsarebasedonthefollowingpassage Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching．Onthecontrary,boththeirknowledgeandexperienceareenriched．Wefeelthattherearemanydisadvantagesinstreaming(把…按能力分班)pupils．Itdoesnottakeintoaccountthefactthatchildrendevelopatdifferentrates．Itcanhaveabadeffectonboththebrightandthenot-so-brightchild．Afterall,itcanbequitediscouragingtobeatthebottomofthetopgrade!
Besides,itisratherunrealtogradepeoplejustaccordingtotheirintellectualability．Thisisonlyoneaspectoftheirtotalpersonality．Weareconcernedtodeveloptheabilitiesofallourpupilstothefull,notjusttheiracademicability．Wealsovaluepersonalqualitiesandsocialskillsandwefindthatmixed-abilityteachingcontributestoalltheseaspectsoflearning．
Inourclassrooms,weworkinvariousways．Thepupilsoftenworkingroups:thisgivesthemtheopportunitytolearntocooperate,toshare,andtodeveloptheirleadershipskills．Theyalsolearnhowtocopewithpersonalproblemsaswellaslearninghowtothink,tomakedecisions,toanalyzeandevaluate,andtocommunicateeffectively．Thepupilslearnfromeachotheraswellasfromtheteacher．
Sometimesthepupilsworkinpairs;sometimestheyworkonindividualtasksandassignments,andtheycandothisattheirownspeed．Theyalsohavesomeformalclassteachingwhenthisisappropriate．Weencourageourpupilstousethelibrary,andweteachthemtheskillstheyneedinordertodothisefficiently．Anadvancedpupilcandoadvancedwork;itdoesnotmatterwhatagethechildis．Weexpectourpupilstodotheirbest,nottheirleast,andwegivethemeveryencouragementtoattainthisgoal．
Inthepassagethewriter'sattitudetowards"mixed-abilityteaching"is（ ）． A．critical
B．questioning
C．approving
D．objective
参考答案：
答案解析：