56.l.cling

　　57.interracial....outcomes

　　58.being

　　59.interracial

　　60.the school

　　61.schools

　　62.Rates of

　　63.It was challenged

　　64.Its statistics

　　65.Its rough

　　66.How rich

　　67.A.to

　　68.c.splendid

　　69.D.key

　　70.B.different

　　71.A.prevent

　　72.D.in

　　73.D.focus

　　74.B.over

　　75.C.rather

　　76.c.consumed

　　77.c.vital

　　78.D.deperated

　　79.A.maintain

　　80.B.interact

　　82.B.into

　　83.B.fill

　　84.A.delete

　　85.A.doubt

　　86.A.impact

　　87.and didn’t explain the reasons either

　　88.could be assigned to do another job

　　89.at the risk of his own life

　　90.turned out to be his assistant to answer the call

　　91.his father persuaded him