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.
下列关于太阳活动的影响中,叙述错误的是( )
77万+40万=____
20万+45万=____