#头条创作挑战赛##每天打卡背单词#D154[奋斗]
1、solemn adj. 严肃的，庄严的，隆重的
His father is a solemn man and rarely smiles.
2、behavioral adj. 行为的
These two children have different behavioral responses to the same news.
3、dropout n. 辍学生
He left school as a dropout because he had to help his family with farming.
4、infrastructure n. 基础设施
A good infrastructure includes transport, communications, etc.
5、cultivate v. 耕作，种植，栽培
The farmer is using a machine to cultivate the land.
#寻找小组生活家#
