如果市场利率上升，固定收益公司债的价格会（）。
A.上升
B.下降
C.不变
D.不一定
参考答案：B
-Who is the boy in blue?
-I don't know ______. ______ is a new student in our class.[ ]
A. he, His
B. him, Him
C. him, He
鸡腿菇菌丝体具有不覆土不出菇的特点。
