Going to the Convenience Store（超商門口的神祕數字）
Why do most convenience stores have a line of numbers by their doors?
（A） To help people guess the height of a robber.
（B） To make sure that large boxes can get through the door.
（C） So tall people don't hit their heads.
Now the answer is （A） To help people guess the height of a robber.
People in Taiwan go to convenience stores every day.
You can see these stores everywhere!
If you pay more attention, there are numbers by the doors.
Those are height strips.
Do you know what they're for?
They help people guess a robber's height.
In the 1970s, Dr. Rosemary Erickson wanted to stop convenience store robberies.
She learned something important.
Store clerks were often wrong when they guessed the robbers' height.
Height strips helped them guess better.
The first convenience store to start using them was 7-Eleven.
Although convenience stores now have cameras, height strips are still useful.
They make stores look safer.
They also make bad guys think twice about stealing!
convenience store（n.）便利商店
convenient（adj.）方便的
robber（n.）強盗；搶匪
rob（v.）搶劫
robbery（n.）搶劫；搶案
strip（n.）條；細片
guess（v.）猜測
Before you go into my house, please take off your shoes. Thanks!
to form an opinion from little or no information
I'm guessing that the answer is nine, but I am not sure.
Tina puts her money in the pocket of her clothes. She can easily take it out.
He has a clear mind.清楚的思緒
Natalie was clear to enter the building after she showed her ID card.
George waited in line to pick up his medicine after he saw the doctor.
I locked myself outside the apartment because I lost my keys.
step腳步；步驟；臺階
The baby just took her first step.
The first step is…
Sit on the step in front of the house
Please step forward/backward.
You are stepping on my foot.你踩到我的腳了
a flight of steps
一段臺階
We had to climb some steps to reach the front door.
我們得爬上幾級臺階才能到大門前。
I asked them to leave the parcel on the （front） step （= outside the door to the house）.
我叫他們把包裹放在門口。
Mind the step as you leave the train.
下火車時請小心腳下。
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