一个物体由多个完全相同的小正方体组成,它的三视图如图所示,那么组成这个物体的小正方体的个数为()
A:2个
B:3个
C:5个
D:10个
设直线nx+(n+1)y= 2 (n为自然数)与两坐标轴围成的三角形面积为Sn(n=1,2,…2014),则S1+S2+…+S2014的值为____.
—That's quite a long time. There must be too many people waiting in line.