--- Mum, may I have to eat? I’m so hungry. --- Yes, there is lots of bread in the fridge. Help yourself. A.enough B.much C.anything D.something 答案:D(08年上海卷文)(本题满分15分)本题共有2个小题,第1个题分,第2小题满分10分.已知函数,,直线x=t(t∈R)与函数f(x)、g(x)的图像分别交于M、N两点.(1) 当时,求|MN|的值;(2) 求|MN|在t∈时的最大值.