题目

在“探究凸透镜成像规律”的实验中，当烛焰离凸透镜的距离小于焦距时，眼睛通过透镜观察到的虚像的情况是图中的                                          （   ）  答案：B解析:略写作。写自己最喜欢的季节，50词以上。 My favourite season_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________