题目

如图所示，直线y= x分别与双曲线y= （k1＞0，x＞0）、双曲线y= （k2＞0，x＞0）交于点A，点B，且OA=2AB，将直线向左平移4个单位长度后，与双曲线y= 交于点C，若S△ABC=1，则k1k2的值为． 答案：【1】9The city of Chengdu has grown so fast that it's at least ______ what it used to be． A．five times the size of B．five times the size as large as C．five times larger D．five limes size as