Mr Green had a little boy. Every day had work he came home and played with his son.
One night ,while Mr Green was at work, he 1 that he had extra work to do for the evening ,and that he wouldn’t be able to play with his son.2he wanted to give the boy something to keep him3. So , looking around his office , he saw a 4with a large map of the world on the cover(封面). He got an 5 He removed the map , tore(撕) it up into small pieces and put all the pieces in his coat pocket.
When he got home , the little boy came running to him and was ready to play. Mr Green6that he had extra work to do and couldn’t play at the moment . Then he 7 all the pieces of the map and put them on the table . He said to the boy,”8” was a map of the world, and 9th time you put it back together, my extra work will be finished, and we can 10”. Surely, this would keep the child busy for 11 , he thought.
About half an hour later the boy came to Mr Green and said,” Okay, it’s 12 . Can we play now?”
Mr Green said ,“That’s amazing!13did you do that?” The boy said, “It was14. On the back of the page was a picture of a man . When I put the man together the whole world fell into place.”
里填上“＞”、“=”或“＜”。
Cd+2NiOOH+2H2O，由此可知，该电池充电时的阴极材料是
