在学前儿童科学教育的方法中，运用感知觉探索物体的特性，发现某种现象的发展过程或所发生 发布时间：2018-10-06 13:50 │ 来源：www.tikuol.com 题型：单项选择题 问题： 在学前儿童科学教育的方法中，运用感知觉探索物体的特性，发现某种现象的发展过程或所发生的变化的方法是（）A.科学实验B.观察C.分类D.科学游戏
题型：单项选择题 我们班将在周三有一个志愿者活动，同学们将做些什么呢？从表格中选取适当的词语完成句子，使句意表达完整，符合逻辑。（有多余选项，请只填写字母） A. clean B. tiring C. hold a concert D. have a great time E. clean up F. in the library G. much fun H. put up I. raise money J. easygoing K. drawing some pictures L. fix up Volunteering is (1)______ and can really help other people. Our class is planning to do some volunteer work on Wednesday afternoon in the school. Students of the Art Club are considering (2)______ and selling them to (3)______ for the poor. The music group is going to (4)______ in school to entertain other students. Some students are going to help (5)______. They can help to put books back onto the shelves. Several students want to do some repair work to help (6)______ stuff like bikes, radios, etc. Some others will (7)______ the school garden. They think keeping the environment (8)______ is good for our health. Two boys, Michael and Jerry, are (9)______ and good at sports. They'd like to teach younger students to play sports. Though it may be (10)______, everyone in class is looking forward to it. 查看答案
题型：单项选择题 一般情况下，证券投资的预期收益与风险之间的关系为（）。A.正向互动关系B.反向互动关系C.证券的风险-收益特性不随各种相关因素的变化而变化D.证券的风险-收益特性随着各种相关因素的变化而变化 查看答案
题型：单项选择题 据报道，2009年4月29日，美国亚利桑那州一天文观测机构发现一颗与太阳系其它行星逆向运行的小行星，代号为2009HC82．该小行星绕太阳一周的时间为3.39年，直径2～3千米，其轨道平面与地球轨道平面呈155°的倾斜．假定该小行星与地球均以太阳为中心做匀速圆周运动，则小行星和地球绕太阳运动的速度大小的比值为（ ）A．3.39-13B．3.39-12C．3.3932D．3.3923 查看答案
题型：单项选择题 What did he do A．He telephoned me.B．He picked up the phone.C．He put the receiver down.D．He put my hanger up. 查看答案