【IanMercerdoesn'tsetanalarmclock．TheformerMicrosoftseniormanagerdoesn'tchecktheweather，either．Hedoesn'tturnonlights，watertheyard，oradjustthethermostat（恒温器）．Hedoesn'topenthecurtains，answerthephone，】

　　Ian Mercer doesn't set an alarm clock．The former Microsoft senior manager doesn't check the weather，either．He doesn't turn on lights，water the yard，or adjust the thermostat（恒温器）．He doesn't open the curtains，answer the phone，or call his children for dinner．There's something unique about Ian's home．He has programmed it to do all these things for him．

　　Ian doesn't live in a typical home or have a typical lifestyle．He spent over a decade designing the systems that feature in his unique home．He bought a home automation software package and then improved it．

　　Now there are 79sensors and monitors，and 48light switches in his home．Lights turn on automatically in rooms with people in them．Even being out，Ian can also control his home remotely using voice commands or his phone in any location．That is only the beginning of what this home has been programmed to do．

　　It connects with online calendars，caller ID，online weather services，online address boos，and email，among other things，to get Ian through his day．For example，if there is a meeting in Ian's calendar，it will wake him up，open his bedroom curtains，start and set his shower to his desired temperature．It also informs Ian about traffic conditions．

　　There is plenty more this home has been programmed to do．It keeps him updated on his favorite sports teams and scores．It even monitors online activity to check that Ian's children are doing their homework．The"dinner's ready"command stops operation of their computers and TVs．This is easier than asking his children o shut them down．

　　Ian's home is unique．Mosthomesarenotthissmart，butsoonmorehomeswillbetechnologicallyadvanced．

　　21．What makes Ian's home unique？___

　　A．Having more furniture than usual

　　B．Being programmed with smart software

　　C．Creating a traditional atmosphere for Ian

　　D．Working automatically without Ian's order

　　22．What can we learn about Ian？___

　　A．He invented th