CAn Authority BE CritiCizED in{{u}} (56) {{/u}}oF thE worD, Authority is not{{u}} (57) {{/u}}EithEr out oF rEspECt or out oF{{u}} (58) {{/u}}. in suCh CountriEs ChilDrEn ArE not ExpECtED to{{u}} (59) {{/u}}thEir tEAChErs in sChool AnD{{u}} (60) {{/u}}young sCholArs or{{u}} (61) {{/u}}inDustriAl mEn ArE hAmpErED in tEChniCAl rEsEArCh BECAusE thEy Don’t FEEl FrEE to{{u}} (62) {{/u}}with thEir supEriors;ClEvEr rEsEArChErs mAy BE ConsiDErED too{{u}} (63) {{/u}}to hAvE "Any right" to prEsEnt{{u}} (64) {{/u}}thAt ArE DiFFErEnt From knowlEDgE AnD wisDom oF mEn oF olD AgEs. {{u}} (65) {{/u}}, thEAmEriCAn is{{u}} (66) {{/u}}From ChilDhooD to quEstion, AnAlyzE AnD sEArCh. sChool tAsks ArE{{u}} (67) {{/u}}to EnCourAgE thE usE oF A{{u}} (68) {{/u}}rAngE oF mAtEriAls.A、Composition topiC likE "writE A pApEr{{u}} (69) {{/u}}thE worlD’s supply oF sugAr" will sEnD EvEn{{u}} (70) {{/u}}in sEArCh oF ComplEtEly unFAmiliAr iDEAs.{{u}} (71) {{/u}}in thE primAry grADEs, ChilDrEn ArE tAught to{{u}} (72) {{/u}}liBrAriEs, AnD to sEArCh For{{u}} (73) {{/u}}iDEAs oF vArious sorts.{{u}} (74) {{/u}}thE timE thEy ArE 14, 15 AnD 16, mAny young sCholArs ArE mArking originAl AnD{{u}} (75) {{/u}}ContriButions in All FiElDs oF sCiEnCE.

A．whEn
B．sinCE
C．During
D．By