I was busy_____the paper.
A.to finish
B.at finishing
C.finishing
D.finished
A.to finish
B.at finishing
C.finishing
D.finished
第3题
A.(P/F,i,10)=(P/F,i,9)-i
B.(P/F,i,10)=(P/F,i,9)+i
C.(P/F,i,9)=(P/F,i,10)×(1+i)
D.(P/F,i,10)=(P/F,i,9)×(1+i)
第4题
A.(F/A,i,n)=[(P/F,i,n)(A/P,i,n)]1
B.(A/P,i,n)=(A/F,i,n)+i
C.(A/F,i,n)=(A/P,i,n)-i
D.(F/P,i,n)=(A/P,i,n)/(F/A,i,n)
E.(A/P,i,n)(F/A,i,n)=(P/F,i,n)
第6题
A.(F/A,i,n)=[(P/F,i,n)(A/p,i,n)]-1
B.(A/P,i,n)=(A/F,i,n)+i
C.(A/t,i,n)=(A/P,i,n)-i
D.(F/P,i,n)=(A/P,i,n)/(F/A,i,n)
E.(A/P,i,n)(F/A,i,n)=(P/F,i,n)
第9题
A.(F/P,i,n)(P/F,i,n)=-1
B.(A/P,i,n)(P/A,i,n)=0
C.(F/A,i,n)(A/F,i,n)=1
D.(F/P,i,n)(P/A,i,n)=(F/A,i,n)
第10题
A.(F/A,i,n)=[(P/F,i,n)(A/p,i,n)]-l
B.(A/P,i,n)=(A/F,i,n)+i
C.(A/F,i,n)=(A/P,i,n)-i
D.(F/P,i,n)=(A/P,i,n)/(F/A,i,n)
E.(A/P,i,n)(F/A,i,n)=(P/F,i,n)