论文中的破折号怎么打

为什么铁离子有+2、+3价,而没有其他价态,像+4价等. 铁离子为什么会有+2和+3两种价态 主要看看语法错误,拼写错误啥的,Academic writing should include five parts.They are Introduction,literature Review,Methodology,Results and Conclusions.There are four parts in the introduction.First is the need for the study.You should com 自己写了个小短文,错误多多,并指出错误的原因,为何错了,a bored neighborThere was a bored old man who was a bored and crazy people in my district.My home was at No.18 and he was at No.22 beside my home.perhaps you'll ask me this r 自己写了个小短文,错误多多,最好能简单说下为何错了,Today is Sunday and have no important things.My classmate ane I take exercise on the afternoon.First of all,we have plaied badmintoon for one hour.In fact,I think our level is no 自己写了个小短文,错误多多,I'm a freshman.Topic of conversation that i will talk about university education today.When i aready graduated from highschool,i will have a lot of choices to the future.Look for a job to go and earn many money;s 英语 翻译 be away from 英语翻译QUICKLY! pep四年级英语单词computer的中文意思是： FINE什么意思 fine 为什么还有罚款的意思 Talk with your partner about one of your best friends and discuss with him o帮忙编个对话 fine是什么意思,速度. 春节的来历作文200 Grandma a bad cold since last Saturday.A.has got B.has takenC .has had D .has caught 为什么选C He caught a bad cold and lay on bed last week.He______ ______ a bad cold and _______ on bed for a week. I caught a bad cold a week ago.改为It _____________since I________ I caught a cold last week对划线部分提问划线部分caught a cold （ ）（ ）（ ）（ ） you last week?不好意思题打错了（ ）（ ）（ ）（ ）（ ） you last week？ fine是什么意思? 问一下,fine是什么意思? 1、（ ）there ( ) meat in the fridge?1、（ ）there ( ) meat in the fridge?A.Is;any B.Are;any C.Is;some D.Are;SOME2、It's hot in your city,( A.isn't it B.is it C.does't it D.does it3.我弟弟擅长踢足球.My brother is good at (playing) socc Please write a profile_____your best friend.（用适当的介词、副词填空） 一首经典歌的歌词是"your Beautiful,your Beautiful,your Beautiful,isTrue"是什么歌?首经典歌的歌词是"your Beautiful,your Beautiful,your Beautiful,isTrue"是什么歌? i hope you will find the valley a beautiful place____you may spend your weekend.A which B that C when D where麻烦说下详细过程 谢谢!~ This is a test message,to see if I could send message in Chinese.求翻译! 1the,if,you,know,to,send,please,don't,a,text,how,how,message,read,instruction连词成句2you,can,up,to,100photos,store,you,in,photos,the,your,camera,and,can,also,save,on,PC连词成句3phone,this,make,can,calls,test,send,messages,photos,take,and,gam I Hope Your Every Will Be So Beautiful 翻译 英语翻译 text the message是什么意思?send the message呢? There is few vegetables_____fish in the fridge.A.and B.or C.no D.but fine是什么意思 fine的意思