一个英文老师出了一道这样的难题, .OlPVMFt
题目是这样子的: nJwP|P_
____is bette rthan the god. onIZ& wrk
____is worse than the evil. 1c*;Lr.K
if you eat____,you will die. 4)p ID `
(三个空格必须是同一个字) R}D[ z7
]\/"-Y#4Q
n.G.f bO
qCF&o7 *oN
设上帝之善是＋∞ tF.N
恶魔之恶是－∞ {f;DhB-jj
令所求为x RW<4",
则x＞＋∞ UMK9[Iy$<M
x＜－∞ DbYnd%k*4
∴x属於空集合 bicbCC6kC
∴x=nothing ffsF], _J
'#jZ`
answer: S Erh"~[
nothing is better than the god. a>,Zp*V(
nothing is worse than the evil. UQbk%K2
if you eat nothing,you will die.
