题目

I think we need a cheaper one, too. （改为否定句）I think we need a cheaper one, . 答案：【1】don't【2】either（2007•金昌）如图，圆锥的母线长OA为8，底面圆的半径为4．若一只蚂蚁在底面上点A处，在相对母线OC的中点B处有一只小虫，蚂蚁要捉到小虫，需要爬行的最短距离为    ．