阅读对话,判断正误,对的写“正确”错的写“错误”
Mingming: What are you doing, Lingling?
Lingling: I'm training. I'm going to do the high jump. What are you going to do for Sports Day?
Mingming: I'm going to run the 100 metres.
让一个凸透镜正对太阳光,在距透镜5cm处得到一个最小最亮的光斑.若将一个物体放在此透镜前7cm处,经这个凸透镜所成的像是 ( )
下列词语中划线的字,每对读音都不相同的一组是( )