幂函数f（x）=xα的图象过点（2，4），那么函数f（x）的单调递增_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题填空题

幂函数f（x）=x^α的图象过点（2，4），那么函数f（x）的单调递增区间是（）．

答案

（0，+∞）

完形填空

Kids have their own ideas about money---some are sensible and others are not so wise.
Twelve-year-old Amanda thinks it’s        to save and not blow your money right away “ so you can         other things”.
When it comes to credit cards, eight-year-old Jeremie says when the monthly        comes in “ you sign it and then you give it back” ---leaving out the part about actually        it.
These kids are        far away from the working world, but the ideas they’re forming about        could affect how much they save, how they use credit cards and how much debt they finally take on in later life.
High school business teacher Jeff Balch said his students had        knowledge about money other than spending. “ They don’t know most things because        talks to them about them---as in their parents,” said Balch, “The discussions tend to be in terms of kids        too much money, but no one tells them why, where their money goes.
Mitch Murphy said students’ message to the task force was to “ make it       ”. “ It may be difficult to have a 14-or 15-year-old student get too        about retirement planning, ” Murphy said, “ But if you want to talk about a cellphone contract or a debt card,they will be engaged in.” Murphy said learning financial literacy (能力)　    , well        getting into the work force, should stay with Canadians for life and        the country as a result.
Sandra Martin said children can start learning about money when they learn to       . “ Sit down with the flyers and look at how much things cost,” Martin said. Babysitting and birthday money could be        and there would be a(n)        as to how much could be debited(借) every month, she said.
“ The reality is that we’re not spending with cash anymore. If you’re always in         of your child’s money, then they’re never going to learn what it means to save for something that’s      .”
Balch said he tries to make his students realize the differences between needs, wants and priorities(优先权). If they haven’t learned self-control and if they haven’t learned how to        money, they can easily spiral(螺旋上升) out of control.

A．disappointed

C．enthusiastic

D．independent

填空题

微晶石蜡