将下列句子改为陈述句
①海边上不是还泛着白色的浪花吗？
②我们遇到困难，怎么能退缩呢？
③说出的话难道可以不算数？
①海边上泛着白色的浪花。
②我们遇到困难，不能退缩。
③说出的话应该算数。
A: Hi, Li Jun. You were not at school yesterday. ____ B: Oh, I had a headache and I had to ask for a sick leave.A: Sorry to hear that. ____ B: Yes, my mother took me to the hospital.A: ____ B: The doctor checked me over and said I had a cold.A： ____ B: Yes, a little. The doctor told me to take the medicine three times a day and have plenty of water.A: ____ B: Yeh. Thank you.A; You’re welcome.
张燕在课桌边上粘贴了一首自编小诗当作座右铭。这一小诗（ ）
据统计，环境污染每年给我国造成的直接经济损失高达680亿元，相当于8次唐山大地震所造成的损失。这说明（ ）
