只有符号不同但绝对值相等的两个数叫做互为相反数，
所以-13的相反数为13．
故选：C．
We have been to the village ____ they lived last year. [ ]
A. what
B. when
C. where
D. that
一个因数是7.35，另一个因数是0.6，积是（ ）。
