2. 职称英语
  3. [img]ct_gre5image022[/img]If 9 trees are originally planted in a circular patte

[img]ct_gre5image022[/img]If 9 trees are originally planted in a circular patte

游客2024-01-12  29
问题
If 9 trees are originally planted in a circular pattern as shown above, what is the least number of trees that must be transplanted so that the 9 trees will be in 2 straight rows?
选项 A、4
B、5
C、6
D、7
E、8
答案 B
解析 若9棵树最初以如左图所示的圆形种植，要使9棵树排在两条直线上，问最少需移植几棵树?
解：本题的正确答案为(B)。圆上的任意三点都不在同一条直线上，又根据在同一平面内的两点确定一条直线可知，要使这9棵树排在两条直线上，则至少得有9-2×2=5棵树被移植。
转载请注明原文地址:https://tihaiku.com/zcyy/3356743.html
相关试题推荐
随机试题
最新回复(0)