一个有理数与它相反数的积[ ]
A.一定是正数
B.一定是负数
C.一定不大于0
D.一定大于0
答案：C
— Happy Women's Day! Miss White!
— ____________________[ ]
A. Thank you!
B. Happy Women's Day!
C. Good idea!
1吨水泥与1吨食盐同样重．______．
