已知xa=3,xb=5,则x3a-2b=______. 发布时间:2017-04-22 19:39 │ 来源:www.tikuol.com 题型:填空题 问题: 已知xa=3,xb=5,则x3a-2b=______.
题型:填空题 已知地球上的陆地面积约为149000000 平方千米,用科学记数法表示地球上的陆地面积约为( )平方千米[ ]A.1.49×108 B.1.49×109 C.14.9×108 D.14.9×109 查看答案
题型:填空题 --- I’d like to buy a new house in the center of the city for rent at this special moment.--- Oh. I never doubt ______ it is worth ______ to buy new houses.A.whether; to continueB.that; continuingC.whether; continuingD.that; to continue 查看答案