Amobilephoneapp（应用软件）hasrecentlybecomeverypopularattheMiddleSchoolAttachedtoGuangzhouUniversity．ItisnamedHealthHelper．Putyourweight，heightand（75）___intotheapp，anditwillgiveyousuggestionsonhowt

　　A mobile phone app（应用软件）has recently become very popular at the Middle School Attached to Guangzhou University．It is named Health Helper．Put your weight，height and （75）___ into the app，and it will give you suggestions on how to get healthier．（76）___，the app is not designed by a company but by two Junior 3boys from the school．

　　The two boys are Yang Chengxi and Yang Zhenglin，both 14years old．They learned to design apps by taking part in the school's app-making course，which started last year．

　　"Electronic products are becoming increasingly popular，"said Wang Xiaopeng，the teacher of the app-making course．"It's unpractical to block（阻隔）students from them．So why not guide them to use it in a （77）___ way？"

　　As expected，the course has （78）___ many student including Yang Chengxi and Yang Zhenglin．As cell phone game lovers，the two brought great enthusiasm（热情）into their app-making project．

　　"It is much cooler to design a game than just playing a game，"said Yang Chengxi．They decided to create an app to keep fit since obesity（肥胖）has become a problem for many teenagers．

　　They searched standard health information on the Internet，put them in the app and wrote simple programs to make it work．（79）___ app-making software，the two boys finished their Health Helper app after three weeks of hard work．

　　The taste of （80）___ is exciting．After Health Helper，the two now plan to go a step further．They are working on a robot that can be controlled bu cell phone Bluetooth．Wish them good luck．

　　75．A．nameB．class numberC．addressD．age76．A．ClearlyB．SurprisinglyC．LuckilyD．Terribly77．A．more wonderfulB．more difficultC．more creativeD．more fashionable78．A．acceptedB．attractedC．askedD．amazed