Intheverybeginning,Ididn’t()myneighbors,however,weareinverygoodrelationshipnow.

A.I=I'+I"

B.I=I'-I"

C.I=-I'-I"

D.I=-I'+I"

A.o;i;a

B.o;i;e

C.;i;a

I remember ______ (take)to Beijing when I was a child．

A.lěi lěi

B.léi lěi

C.léi léi

If a country has a trade surplus then

A.S >I and Y >C + I + G.

B.S< i and y >C + I + G.

C.S >I and Y< c + i + g.

D.S< i and y< c + i + g.

A.A.Was I

B.B.Were I

C.C.If I am

D.D.If I had been

main()

{inta[3]={3*0}，i；

for(i=1；i＜3；i++)scanf("%d"，a[i])；

for(i=1；i＜3；i++)a[0]=a[0]+a[i+1]；

printf("%d"，a[0])；

}

错误：______

改正：______

设A_i={1，2，…，i}，i=1，2，…，求：