—Exactly. I have seen it twice.
A:was shown
B:will show
C:is shown
D:has shown
如图,AB切○O于点D,直线AD交○O于D,E两点,BC⊥DE,垂足为C.
有37枚棋子排成一排,甲、乙两人轮流去取.规定每次可取1枚或连在一起的2枚,不能不取,谁取到最后一枚谁就获胜.怎样才能获胜?