一名优秀的钳工在加工精密零件时,需要有一双“火眼金睛”和良好的手感。多年来,“大国工匠”原慧敏摸索出了一套凭目测、手感来判断模具质量好坏的经验,使用正确率100%,手工锉修精度0.01毫米,还不到头发丝的五分之一。他手工钻制精密孔的精度达到了0.03毫米,超过了机器打孔的精度。中国航天科技集团公司以他的名字命名了“原慧敏技能大师工作室”。这说明( )
A:劳动是财富的源泉
B:劳动是幸福的源泉
C:劳动者需要兢兢业业
D:劳动者需要无私奉献
阅读短文,判断正误。
It was Saturday yesterday. It was sunny. Li Lei helped his mother do the housework in the morning. He went to the park with his friends in the afternoon. They played football in the park. His sister Li Mei played computer games at home. Their father, Mr. Li, watched TV at home.