已知f（x）=-1-x2在区间M上的反函数是其本身，则M可以是（ ） A．[-1， 发布时间：2017-05-11 16:13 │ 来源：www.tikuol.com 题型：选择题 问题： 已知f（x）=-1-x2在区间M上的反函数是其本身，则M可以是（ ）A．[-1，1]B．[-1，0]C．[0，1]D．（-1，1）
题型：选择题 下列有关内环境稳态的叙述最恰切的是[ ]A．由于血浆中的缓冲物质的调节作用，使内环境维持在相对稳定的状态B．内环境的温度、pH、渗透压是维持稳态恒定不变的因素C．正常机体在神经系统、激素的调节下，通过各组织、器官的协调活动，共同维持内环境的相对稳定的状态D．正常机体在神经系统、体液、免疫系统等的调节下，通过各组织、器官的协调活动共同维持内环境的相对稳定的状态 查看答案
题型：选择题 短文改错。 此题要求改正短文中的错误.对标有题号的每一行做出判断:如有错误(每行只有一个错误),则按下列情况改正:此行多一个词:把多余的词写在答题卡相应的位置上,用斜线(\ )划掉.此行缺一个词:在答题卡相应的位置上写出该加的词,并附带前(后)词.此行错一个词:在答题卡相应的位置上写出该错词和改正后的词.注意:原行没有错的不要改.Last summer, I invited to a summer camp in America. I had great time there because I made many friends from other country. There were many different kinds of activities. In a party, we take turns to talk about our own country. But I was so shy to speak before other people. I stood there for five minutes without said anything. It was very embarrassed. When I finally opened my mouth, someone couldn't help laugh at my poor spoken English. I could feel almost anything except that my face was burning. It is then that I decided to practice speaking English. 1. _____2. _____3. _____4. _____5. _____6. _____7. _____8. _____9. _____10. _____ 查看答案