我国公司债券的利率由发行人通过市场询价确定。（）
参考答案：对
解析：公司债券的利率或价格由发行人通过市场询价确定。
The train _____ she was traveling was five minutes late. [ ]
A. that
B. on that
C. by which
D. on which
塑胶包装材料常有毒性，这毒性通常是来自（）
A.塑胶本身
B.添加剂、颜料
C.制程
D.变性
