A. Because l can go swimming. B. These books are Tom's C. Yes, it is.
D. She is shopping E It's near the school.
下列属于英国宗教改革独特之处的是( )
已知如图,AB和DE是直立在地面上的两根立柱,AB=5m,某一时刻AB在阳光下的投影BC=2m.
(1)请你画出此时DE在阳光下的投影;
(2)在测量AB的投影时,同时测量出DE在阳光下的投影长为4m,请你计算DE的长.