| other， showed， after， patient， from， knowledge， terrible， another， competition， over， before， invented |
Now， mobile phones are becoming more and more helpful， especially some new apps． In fact， it is really difficult for people to make apps（应用软件）． They need lots of
(1) that you don"t know． But some middle school students are inventing their own apps． Recently， an app
(2) for middle school students was held in Shanghai， China． A group of middle school students from all around China
(3) their inventions at the competition．
Zhang Shanlin， a student from WFLMS， has
(4) an app called Health Helper． His app is very useful． It tells people when and how to do exercise every day．
Chen Jing is a student from Beijing． The air in Beijing is often
(5) ， so he invents an app that can calculate（计算）PM 2.5． In this way， he can know whether the air is bad or not by his mobile phone
(6) he goes out．
" It is not easy to make an app． You have to be really
(7) and careful． Sometimes， you have to try
(8) and over again． But I enjoy doing it，" said Zhang Yuqi，
(9) student from WFLMS． Many interesting apps have left a deep impression（印象）on the engineers
(10) Sohu and other companies at the competition．
What kind of app do you want to make？ You may try to make one， too．