设S='I am a student',T='good',Q='worker'.求：Strlength (S) SubString(&sub,s,8,7) SubString(&sub,T,2,1) Index(S,'a',1) Index(S,T,1) Replace(&s,'student',Q) Concat(&N,Substring(&V,S,6,2)Concat(&p,T,SubString(&W,S,7,8)))这是数据结构的一题课

I am a student是什么意思 i am being a student. I am a student.对还是I am student. 设S='I am a student',T='good',Q='worker'.求：Strlength (S) SubString(&sub,s,8,7) SubString(&sub,T,2,1) Index(S,'a',1) Index(S,T,1) Replace(&s,'student',Q) Concat(&N,Substring(&V,S,6,2)Concat(&p,T,SubString(&W,S,7,8)))这是数据结构的一题课 数据结构,设s=“I AM A STUDENT”,t=“GOOD”,q=“WORKER”.求：StrLength（s）,StrLength（t）,SubString（s,8,7）,SubString（t,2,1） 简述空串和空格串的区别.2.设s=’I AM A STUDENT’,t=’GOOD’,q=’WORKER’.求：(1) StrLength(s) (2) StrLength(t) (3) SubString(s,8,7) (4) SubString(t,2,1) (5) Index(s,‘A’) (6) Index(s,t) (7) Replace(s,‘STUDENT’,q) (8) Concat( I am ( ) student A:a B:an I am a student （） a school. I am a student.改为一般疑问句 i am a student.改成疑问句 I am a student是什么时态 i am a student 什么时态? I am a student 做一般疑问句 I am good a student I am a good student 哪个对 理由I am good a student I am a good student 哪个对 理由 I ‘am a student 一般一问句 I am a student,_______I?翻译疑问句 I am a (student) 变复数 i am a student.改成复数句