假定英语课上老师要求同桌之间交换批改作文，请你修改你同桌的以下作文。文中共有10处语言错误，每句中至多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧)，在下面写出该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下划一横线，在下面写出改正后的词。

注意：

每次错误及其修改均仅限一词

只允许修改10处，多者（从第11处起）不计分。

I’d like to say anything about the service in our school dining hall. In general,the service is satisfied. The hall is clean and tidy. And﹀ dishes look inviting and tastes good. What’s more, the workers there treat us as their friends, which makes us real happy. However, the cost of the meals was a little high. Also, we have only a limited variety of dish which are the same every day. In addition, we often have to stand with line for a long time after we get our food. This wastes a lot of time. I hope something can be done to solve about these problems soon.

如图是小刚同学探究平面镜成像的装置。在竖立的玻璃板前面A处放一支点燃的蜡烛，可以看到玻璃板后面B处出现蜡烛的像。

（1）小刚拿一支大小和点燃蜡烛相同的蜡烛在玻璃板后面移动，当移动到B处时，可以看到它跟像完全重合。这里应用了__________（选填“等效替代法”或“控制变量法”）的物理方法。这一实验现象可以说明平面镜所成的像的大小与原物体_________。

（2）小刚发现用光屏去承接蜡烛在B点的像，像怎么也无法成在光屏上，这一实验说明平面镜所成的像是_______像（选填“实”或“虚”）。

（3）若用刻度尺量A点到平面镜的距离和B点到平面镜的距离，发现它们的值是相等的，这一实验现象说明____________________________。