When Bill is very young, he loves picture. His mother often draws some for him on old pieces of paper. She is very bad at drawing, but bill likes her pictures and always wants more. Then, when he is a little older, Bill’s mother gives him some pencils and a drawing book, and he begins drawing pictures, too. But they are never good .When Bill is five years old, his mother gives him a small blackboard and some pieces of a baby on the blackboard, he draws lines(线条) and rubs(擦) them out too for ten minutes , but when he looks at his picture , he is not happy. “Well”, he says at last(最后) to his mother, “I’ll put a tail(尾巴) on it and make it a monkey.”

H7N9型禽流感，其病原体是首次发现的新亚型流感病毒，下列说法正确的是（    ）

Hey, boys and girls! Stop ____. I have something interesting to tell you.    

结束法国封建制度的是