It's hard to keep the housewith two kids 发布时间:2017-06-27 01:54 │ 来源:www.tikuol.com 题型:选择题 问题: It's hard to keep the house with two kids in it.[ ]A. cleaningB. to cleanC. cleanedD. clean
题型:选择题 读“我国某河流水文站的气候直方图”及“河流流量过程线图”,完成20、21问题。小题1:该河流水文站可能位于( )A.东北地区B.华北地区C.西北地区D.东南地区小题2:造成图4月份峰值流量的主要补给是( )A.大气降水B.永久性积雪和冰川融水C.地下水D.季节性积雪融水 查看答案
题型:选择题 —Could you tell me _______, Mary? —Of course. Go straight, and you’ll see it on your right.A.where is the cinemaB.where the cinema isC.where was the cinemaD.where the cinema was 查看答案
题型:选择题 如图所示,轨道ABC光滑,弹簧固定在水平轨道末端,小球从A处由静止滚下,撞击弹簧后又将沿水平轨道返回,接着滚上斜面。在这整个过程中,机械能转化的情况是( )A.重力势能→动能→重力势能B.动能→弹性势能→动能C.动能→势能→动能→势能→动能D.重力势能→动能→弹性势能→动能→重力势能 查看答案