题目

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式，并将答案填写在答题卡相应的位置上。In China, the panda is a symbol of peace, harmony and friendship. That makes it the perfet choiceto be a new representative to expand green energy in 【1】 country. Over the next five years, Panda Green Energy 【2】 (set) up 【3】 (vary) power plants across the country. These plants look like lovable cartoon pandas in shape.The first panda plant was recently set up in Datong, China, and looks like a happy panda with eyes 【4】 look曲线y2=4x关于直线x=2对称的曲线方程是（    ）A.y2=8-4x            B.y2=4x-8             C.y2=16-4x             D.y2=4x-16