题目

改写后的课文内容填空（共10个空，每空1分，满分10分）        Many people believe that “It is always calm before a storm.” Actually it is not true. Before the Tangshan earthquake, strange things happened. Some animals were too n______ to eat and the water pipes in some buildings cracked and b______. At 3:42 a.m. the terrible earthquake broke out. In fifteen seconds, a large city lay in r_____. The suffering of the people was e_______. Almost everything was d_____ and thousands of children were left homeless. Before people could r_______from the first quake, a seco已知：关于x的方程x2+（m-4）x-3（m-1）=0有两个不相等的实数根．（1）求m的取值范围；（2）抛物线C：y=-x2-（m-4）x+3（m-1）与x轴交于A、B两点．若m≤-1且直线l1：经过点A，求抛物线C的函数解析式；（3）在（2）的条件下，直线l1：绕着点A旋转得到直线l2：y=kx+b，设直线l2与y轴交于点D，与抛物线C交于点M（M不与点A重合），当时，求k的取值范围．