氯化钙有毒吗

你的暑假过得怎么样 _____your summer vacation ____? 英语翻译David:Sally,where will you spend your vacation?Sally:I will go to Canda for vacation?David:How exciting!I've never been there myself.when are you leaving Sally:Next weekDavid:How long are you staying Sally:Two weeksDavid:why do you choose 英语翻译大桥街是个能让人玩的开心的好地方.Bridge Street is a ______ ______to ______ ______. 请问怎么能让英语单词记的准,又快那? ( )The police helped me__the thief.A.to stop B.stop这道题我认为A和B都可以,可是答案却是B,我不知道为什么, They ( )[stop]the thife and took him to the police station.用方括号里词的适当形式填空急! Fortunately,they arrived promptly and they had little difficulty _____ the fire stop burningAlettingBmakingCgettingdcausing答案选A我选B please tell me when the plane will in beijing.i will meet you in 机场 汽车的雾灯用黄色光 为什么要用黄色光?这是我的作业 十万火急! 汽车的雾灯为什么是黄色的? 雾灯为什么选用黄色光专家请进! 汽车雾灯的颜色为什么是黄色ji 汽车的雾灯为什么用黄色的（从物理角度分析） 1.The Greens was at table when I visited them last night2.What make you think I'm a teacher?3.That's too much dear.I have little money with me.对以上几个英语句子进行改错找出错误的词写出正确答案并说明原因 The Greens ___(have) supper when l ____(visit) them last night The Greens was at table when I vistied them last night.哪里错了 the blacks (were/are) having dinner when i phoned them last night When I saw them last time,they were working ___ the farm.A at B in C by D on应该选哪个?为什么? 党是阳光我是花作文怎么写 党是阳光我是花作文 党是阳光我是花作文 党是阳光我是花 作文 一般来说磁场是和磁体同时存在的,但是在两个磁体间也会有磁场吗?怎么判断他的磁场方向呢?我说的是两个磁体 之间 的磁场 初二物理习题 灯泡两只小灯泡串联在一起,无意将其中一只小灯泡打破,另一只小灯泡变得更亮了 . 请回答：1 另一只小灯泡的电流怎么变化 变大 变小 还是不变? 2 由此猜测, 在作图题连家庭电路时有什么区别（带一个开关） 本人比较白痴..问几道有关电学的初二物理题1.额定电压为220v的用电器,想把它接在110v的电路中,不想改变功率,应该怎么办?2.用一根均匀的电热丝加热烧水,10分钟烧开一壶水,若将电热丝截去一 I don't know when Rose will come tomorrow.Would you please tell me＿tomorrowA.when she comes B.when she will come when the fire police got there the building was on fire,but on one knewwhen the building ____ fire.A had caught B caught A还是 B,请指教 The building around the corner caught fire last night.The police are now____ the matter.A.looking up B.looking out C.looking into D.looking for A:Will you please tell me when he_____?B:I'm not sure,but I'll let you know at once when he_____.A.comes...will comeB.comes...comesC.will come...comesD.will come...will come The house caught fire last week,with little of the original building_.A.remain B.remained C.remaining为什么? 红光加黄光是什么颜色?