I liked listening to the radio when I was young . I grew with the radio . I remember my grandparents had a small black radio when I was a little child . Every day at 6:00pm we listened to stories and had supper. There was a long story , but we could only hear a small part of it ----just 30minutes every day. It might take a few months to finish all the story . We listened to the story every night . And never got tired of it .

But as I grew older, I wanted to watch news reports on TV. I don’t want to listen to the radio any more. However my grandparents still want to listen to it . We have to have the radio and TV on at the same time. I watch TV and they listen to their stories on the radio.

根据短文内容判断正误，正确的在括号内填A，错误的在括号内填B。

小题1:My grandparents had a small red radio.

小题2:Every day we listened to the stories at 6:00pm when I was a little child.

小题3:We could listen to the radio only 30minutes every day.

小题4:Now I like listen to the stories on the radio and my grandparents like watching TV.

小题5:My grandparents don’t want to listen to the radio any more.       

Which of the following is NOT an assumption of the constant growth dividend discount model (DDM)（）

A. The growth rate of the firm is higher than the overall growth rate of the economy.

B. ROE is constant.

C. Dividend payout is constant.