instruction,introduction的区别

一个是说明,一个是介绍Read the .....,then you can take the medicine right.此处，改该填explanation还是instrouctioninsso,thanksoh,may I know your jobstudentoh,a good guyno,a good girlare you a studenta primary school ,a high senior school or a university pupil,no,a worketwoorkeroh,you should know more than me,but why you do these exercises?my interestoh,i lost "do"do these?a little easy for youno problem,I. know.Just to go abroadyou were wrong ,you made a mistake just nowyou cant say -just to go-oh,just a Kid to you,so poor ,thanks,Glad to listenjust a kid to you?chinglish?oh,a Little teacher,please tellme the correct sentencejust just gomaybefight!learn it wellha,I am in forties,I think you should learn the spirit from me.You are so young and smart,if possible,be my teacher.sorry,i cant be your teacher.i am not good at this.sorryand i am just a sixteen-year-old girl