因为幂函数的定义域为[0，+∞），且幂函数在定义域上单调递增，
所以y≥0，即函数的值域为[0，+∞）．
故答案为：[0，+∞）．
单词拼写（共10小题；每小题1分，满分10分）
根据下列句子所给汉语注释，在句子右边的横线上写出空缺处个单词的正确形式。
1. Their office is on the ______________ (第九) floor.
2.Thank you for ___________（提供）to help , but I can manage it myself.
3. Because he is not familiar with the (手续)of going abroad, he intends
to search the internet.
4..The sound of her voice came (飘) down from an upstairs window.
5.Television provides universal (娱乐).
6. He wanted to find a (固定的)job, but he didn't make it.
7. He (像)his mother both in appearance and in character now.
8.The whole story is a (幻想)，yet many people consider it true and enjoy it.
9. All the boys were standing up （笔直）
10. Two hundred _____（被盜的） bicycles were returned to their owners last month
道德和法律（）
A.都是调节人们行为的规范
B.两者的社会基础不同
C.行为者道德良心引导人们自觉遵守社会的道德规范和准则
D.国家机器的强制性力量来制约人们的社会行为
E.产生和发展的趋势相同
