欧阳炜霞回答:
梯形中最多有2个直角.
故答案为:2.
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1.the,flight,five,ago,for,America,off,take,minutes.(.)2.enjoy,at,he,the,oneself,last,party,week,do(?)3.have,it,you,ever,to,talk,him,about(?)4.Tony,he,travel,oneday,hope,can,all,world,the,over(.)5.he,english,beautiful,speak,how(!)