__________aimstohelpstudentstopayattentiontoteachingcontentefficientlyatthebeginningoftheclass.
A.Lead-in B.Presentation C.Preparation D.Practice正确答案A
__________aimstohelpstudentstopayattentiontoteachingcontentefficientlyatthebeginningoftheclass.
A.Lead-in B.Presentation C.Preparation D.Practice正确答案A