某品牌服装销售商对各种型号的市场占有率进行调查时,他最应该关注的是服装型号的( )
如图,Rt△APC的顶点A,P在反比例函数y=1x的图象上,已知P的坐标为(1,1),tanA=1n(n≥2的自然数);当n=2,3,4…2010时,A的横坐标相应为a2,a3,a4,…,a2010,则1a2+1a3+1a4+…+1a2010=( )
Lin is going to __________ from Dalian to Beijing when Lin's older.