光子静止质量

What are the advantages and disadvantages to having a multicultural society in US是美国文化中的问题希望得到英文答案 同义句转换.the businessman bought our school some latest teaching equipment.some latest teaching equipment__ __ __ our school by businessman. his busy day初一英语作文要一般现在时 1最高价氧化物对应的水化物中,碱性最强的物质与呈两性的氢氧化物反应的离子方程式为 2钠和镁比较、化学性质较活泼的是--------证明的实验方法是---------证明CL与Br的单质活泼性较强的离子 老师好.能形成两性氢氧化物的元素是什么?该元素与K 的最高价氧化物的水化物反应的化学方程式? 两性氢氧化物与最高价氧化物的水化物中酸性最强的离子的反应方程 Ga的最高价氧化物的水化物是两性氢氧化物么 GaAs中两个元素的价态分别为多少 如图7-5,在三角形ABC中,角B=60度,角C=45度,D,E分别在AB,AC上,将三角形A BC以DE折叠,点A恰好落在BC边上的F处.若A,F两点之间的距离为6,则EF的长是（ ） A 3√3 B 2+√3 C 3+√3 D 2√3 这题可出错,不确定 （ i have some ___(japan) pen pals 用正确形式填空 But I think they taste really terrible. The apple taste good.They ____well and ____alrady.A .sell;have been sold outB.sold;has sold outC.sell;sell outD.are sold;have been sold out2.I heard XTX will sing at the Grand Theatre.-- Where did you _______?A.put that upB.make that upC.take that up -______do the shrimp dumplings taste?-They taste______.A.What,delicious B.How,not salty C.How,too salty D.What,tasty people are d__every day ,but their names are same横线上应填什么单词 ___people are the same.A.No B.Not C.BothC肯定是错的.希望告诉一下是A还是B,要详情. Be的氧化物的水化物可能具有两性为什么是错的?我觉得是对啊！不是有对角线规则吗？ how is the weather today?it is-—cold and-—humid.选项:a kind of.kinds of.kind of.pretty.请附带 各选项语法!谢啦. 1.The ____ is very cold in my city now.A.jacket B.job C.food D.weather2.---How is the weather today?---It is ___.It may rain.A.sunny B.cloudy c.dry D.cool taste(现在分词) The weather here was kind of cold last week.为什么不是a kind of. Our store sell 是sell吧,our sore 是单数还是复数啊 they sell shorts in this store 否定句 young as she is,our teacher is very experienced and by all of us.空格里为啥要填highly thought of Leaving Is The Only Way Out 歌词 the only way The only way out is to study hard 翻译成汉语是什么啊? She has been in what doctors describe as a vegetative state for six years.你能不能帮我翻译一下这个句子呢?能不能顺便解释一下句子中的固定词组意思呢? She had been in ____doctors described as in a confused state of mind for five years.A.how B.what C.which D.that You are going to be a lifetime of a coward,or to be hero,even if only for a few minutes,you need more than a courage from heart cries of the. Strive for my goal, I need to be with you翻译! We sing and we play our recorders. I will knock my way out through the crowd!No one can stop. He made his way through the crowd.