问题
填空题
如果2,2,5和x的平均数为5,而3,4,5,x和y的平均数也是5,那么x= _________ ,y= _________ 。
答案
11,2
如果2,2,5和x的平均数为5,而3,4,5,x和y的平均数也是5,那么x= _________ ,y= _________ 。
11,2
选词填空。 | |
2. There _____ to be a lot of manatees. 3. Some of the swamps have become _____. 4. I feel that zoos _____ clean and safe places for _____ animals to live and help to _____ the public about _____ for them. |