完型填空

　　Have you heard of the story of“spilt milk?”Well, we all know it is no use crying over spilt milk．But this story is 　　1　　．

　　A famous scientist had 　　2　　 several very important medical discoveries．He was asked in an interview 　　3　　 set him so far apart from others?

　　He responded that it all came from an 　　4　　 with his mother that occurred when he was about two years old．He had been trying to 　　5　　 a bottle of milk from the refrigerator 　　6　　 he lost hold of the slippery bottle and it fell, spilling its contents all over the kitchen floor－a sea of 　　7　　!

　　When his mother came, instead of yelling(大叫)at him or giving him a 　　8　　, she said,“You know, Robert, whenever you make a mess like this, you 　　9　　 to clean it up and restore 　　10　　 to its proper order．We could use a sponge(海绵), a towel, 　　11　　 a mop(拖把)．Which do you prefer?”He chose the sponge and together they cleaned up the spilt milk．

　　His mother then said,“Robert, what we will do is an experiment in how to 　　12　　 carry a big milk bottle with two 　　13　　 hands．Now, let's try and 　　14　　 if you can discover a way to carry it without dropping it．”The little boy 　　15　　 if he grasped the bottle at the neck with both hands, he could make 　　16　　．What a wonderful lesson!

This scientist 　　17　　 remarked it was at that moment that he knew he didn't 　　18　　 to be afraid to make mistakes．　　19　　, he knew that mistakes were just opportunities for learning something new, which is, 　　20　　, what scientific experiments are all about．