—Oh, it's me! This photo         when I was five years old.

    One day, a little schoolboy went home with a pain in his stomach.

    "Well, sit down and 1 a cake," said his mother."Your stomach 2hurting because it's empty.It'll be all right when you've got something in it."

    Five minutes later, Dad came home 3 the office.And he said he had a headache.

    "That's because your head is 4," said his clever son."You'll be all right if you have got 5 in it." His dad and mum laughed.

对正整数n，记n!=1×2×3×…×n，则1!+2!+3!+…+10!的末尾数为（　　）