Limited Screen Time What Is It？
    The newly app（應(yīng)用程序） Limited Screen Time designed by Thomas Black Company is coming out today.Limited Screen Time is a simple app that allows you to set limits on the time your children use an iPhone or iPad.
    Background
    Parents are worried about the length of time that today's children spend on screen.And long screen time is one of the reasons why kids are short-sighted.Limited Screen Time is a simple way to help set and control limits to your children's time with an iPhone or iPad.
    How Does It Work？
    Step 1 use your finger across the clock to set the time
    Step 2 set the user by typing on the "Users"
    Step 3 press "Start"
    Step 4 pass your iPhone or iPad to your child and let them use the phone anyway you choose （eg.Apps，movies，music）
    What Happens Next？
    After you set the time，the device（裝置） will receive a set of messages alerting（警告） your children that "Your screen time is up".Your children will be unable to continue the phone until the pass code is correctly entered.
    Graphs（曲線圖）
    From the graphs you can see the weekly length of screen time.

（1）Which company designed "Limited Screen Time "？

Thomas Black Company.

Thomas Black Company.

（2）Why are kids short-sighted according to the passage？

Because they spend long time on screen.

Because they spend long time on screen.

（3）How many steps should we take to set "Limited Screen Time "？

4.

4.

（4）What will the device receive after setting the time？

After setting the time，the device will receive a group of messages.

After setting the time，the device will receive a group of messages.

（5）What's the usage of graphs？

Graphs can be used to see the weekly length of screen time.

Graphs can be used to see the weekly length of screen time.