Archer Calder is a high school student from America.His younger sister Della was born with intellectual disabilities（智力殘疾）. （1）因?yàn)檫@個(gè)病，她在說話和閱讀上有很大困難。 Archer was never able to talk with Della.It has always been his dream to help his sister communicate with others.
   Archer used to search online for apps that might help Della express her feelings and needs. （2）However，he felt upset because the available apps were quite expensive. And they didn't offer what he wanted.Archer loved computer programming，so he decided to develop his own app.That was how Freespeech was born.
   When using Freespeech，users can see different buttons（按鍵） with pictures on the screen.Each picture stands for a word. （3）When a button is pressed，the word will be read out loud. Users can make sentences to communicate by pressing different buttons in order.It's really simple to use.
   To improve his app，Archer sometimes asks for help online.For example，when he found Della deleted his program by mistake，he asked how to stop that happening again on the Internet. （4）其他程序員給了他一些有用的建議來解決這個(gè)問題。
   Now，Archer still keeps working on the program，not only for Della，but also for those in the same situation as her.What's more，he makes his app completely open and free，which is different from other apps. （5）He is very proud that he can provide help for more people in need through his work.

（1）

（1）She has much difficulty in speaking and reading because of the illness.

（1）She has much difficulty in speaking and reading because of the illness.

（2）

然而，他很失望，因?yàn)槟芾玫膽?yīng)用程序都特別昂貴。

然而，他很失望，因?yàn)槟芾玫膽?yīng)用程序都特別昂貴。

（3）

當(dāng)按下一個(gè)按鍵時(shí)，這個(gè)單詞就會(huì)被大聲讀出來。

當(dāng)按下一個(gè)按鍵時(shí)，這個(gè)單詞就會(huì)被大聲讀出來。

（4）

Other programmers gave him some useful suggestions to solve the problem.

Other programmers gave him some useful suggestions to solve the problem.

（5）

他很自豪，通過自己的努力，他能給更多有需要的人提供幫助。

他很自豪，通過自己的努力，他能給更多有需要的人提供幫助。