A:He is reading a book.
B:He thinks the book is difficult.
C:He doesn't like the book.
无脊椎动物中游泳最快的是乌贼,它的速度是每分钟 910 千米。李叔叔的游泳速度是乌贼的 445 ,李叔叔每分钟游多少千米?