问题
填空题
函数f(x)=
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答案
∵函数f(x)=
的定义域为A，∴A=（-∞，1-2x
]，1 2
又 值域为 B=[0，+∞），∴集合A∩B=[0，
]，1 2
故答案为：[0，
]．1 2
搜题请搜索小程序“爱下问搜题”
函数f(x)=
|
∵函数f(x)=
的定义域为A，∴A=（-∞，1-2x
]，1 2
又 值域为 B=[0，+∞），∴集合A∩B=[0，
]，1 2
故答案为：[0，
]．1 2
情景反应。（共5分；每小题1分） 从方框中选择恰当的句子，完成下面的对话》 [ A middle student and her mother are visiting the security education show(安全教育展). ] M: Come on, darling, so many pictures here. S: 小题1: M: Traffic safety. S: Sounds boring. M: 小题2: S: Maybe. Oh! Mum, look at this picture, a boy is hit by a car when he is running across the road. 小题3: M: So it is! S: 小题4: . That helps us stay safe from danger. M: Yes, better safe than sorry. Let’s go to another hall to learn more about how to protect ourselves. S: 小题5: Let’s go.
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