—It's a long story, but you can hardly find new words in it.

—Good! _____ it will be too hard for children. [    ]

A. So

B. And

C. But

D. Or

关于鼻用喷雾剂的使用，错误的说法是

A．喷鼻前先呼气
B．同时头部稍向前倾斜，保持坐位
C．将气雾剂尖端塞入一个鼻孔，用手堵住另一个鼻孔并闭上嘴
D．挤压气雾剂阀门喷药的同时急速地用鼻子吸气
E．喷药后将头尽力向前倾，置于两膝之间，10s后坐直，用嘴呼吸