Basketball is still a young game. It's over a hundred years old. In the winter of 1891, a certain college was having some trouble with its boy students. The weather was bad and the students had to stay indoors. As they couldn't play outdoors, they were unhappy, and some even got into fights from time to time.
       Some of the teachers at the college asked Dr. Naismith to invent（发明）a game so that the students might have something to play with. It was not easy to invent such a game because it had to be played indoors , and the court（球场）was not very large.
Dr. Naismith thought for a few days and invented a kind of ball game. It was a fast, wonderful game with much moving and passing of the ball. It was played between two teams. To make a score , the ball had to be thrown into the basket ten feet（英尺）above
the floor on the wall. At each end of the court there was such a basket. At first, Dr.
Naismith wanted to throw the ball into a box. As he could not find boxes of the right size, he had to use fruit baskets instead. That is how the game got its name.

根据短文内容及首字母提示，填写所缺单词，使短文意思完整。每空限填一词。

    If you are a little afraid when you walk alone at night, you can phone your family to make sure they know you are s____ But making calls may make you the target (目标) for bad people.

    Now there is an app and i____lets your family know your journey. And it will call for help when it feels you're i____danger.

    The app is c____ Companion(同伴). Before you start your journey, you input your starting place and your finishing place. Then you s____ them to your companion. The companion can be anyone in your phone book, and they don't n____to have the app.

    The app will tell your companion w____you are at any time. And it will show a button(按钮) on your phone screen every few m____asking “Are you OK?” If you don't press the button in 15 seconds(秒), your companion will get an alarm(报警). And the app will be ready to call the police for h____.

With the app, you will never be w____about going home alone.

被称为裸子植物故乡的是（      ）

一个长方形游乐场长90米，宽80米，如果把它的各边缩小到原来的 $\frac{1}{1000}$ 画的一张图纸上，图上的长和宽各是多少厘米？

夏天，在庭院里的器皿中经常有一些雨水，如果时间长了，里面有一些上下翻动的小虫，它们是蚊子的（　　）