如图，抛物线y=-x的平方+2x+c与x交于a，b两点，它的

2006年7月12日,我国运动员刘翔在瑞士洛桑以12秒88的成绩打破了打破沉睡13年之久的110米栏世界纪录刘翔在此次比赛中的平均速度为?答对有加分,快 worry about it!The baby will look like __ her father __ her mother.Don't worry about it!The baby will look like __ her father __ her mother.A.not only,and B.also,too C.either,or 我的姐姐用英语说 to be honest是什么意思 to be honest关于这个单词的所有解释和用法 谢谢帮助 求黑执事yes my lord和yes you are highness铃音声音大一点 清楚一些 坐等.[313628488] 为什么中国人这么穷? my lord 和 yes, your highness翻译过来是什么? 中国人为什么穷 为什么中国人那么穷 英孚网络课程` _____is Li Yundi?-----A famous Chinese pianist.A.How B.What C.Which D.Who {What ,who}is liu Ming?A famous Chinese pianist.这里用那个? 还有什么与to be honest 含义相同的词 一男生对我说,以后要养不起我了,问我他是不是我的例外,我问他什么时候结婚,他说他在等我,称出瓶和金属的总质量是878g,然后将瓶内装满水,称出瓶、水和金属粒总质量是1318g.求瓶内金属的 盗图听过,淘宝上总能看到, 雄性小强可以繁殖吗 lettle water drop ( ) up in the sun.选择:a.wakes b.wake c.waking Little Water Drop rises up to the sky.（同义句转换） Stories we tell every day have had to be rewritten five times to work as well in print as they do ltranslation, please. 土元和金边土元有什么区别 "珍藏一生"用英语怎么说 The Difference Between Essential English And Business English...基础英语和商务英语的区别... Can you give me ——pen?this one is brokenA.another B.the other C.other D .others 顺便讲讲这几个词用法谢谢~ works sells 请翻译The shop where my mother works sells school things. the look of love的原唱是谁一首爵士乐!有谁知道原唱是谁啊? sells shop 意思 爱的眼神 THE LOOK OF LOVE怎么样 KNOW MORE,SELLS MORE 是什么意思 We sells them our fruit. 9.______ a little earlier,I would have caught the train.A.Did I leaveB.Would I leaveC.Had I leftD.Have I left communication is a learned behavior?do you agree or disagree?why?能不能说再具体点!