题目

“Problems and worries are normal (正常) in life.”says Lucy. “But I think talking to someone helps a lot. If we don’t talk to someone, we’ll certainly feel【1】.”Lucy once lost her 【2】, and worried for days. She was afraid to tell her parents about it. She even walked three miles to school each day because she didn’t have any money. She just kept 【3】of the problem again and again in her mind. “If I tell my parents, they will be angry!” But in the end, she talked to her parents and they were really 【4】. Her dad said that he【5】made careless mistakes himself. 已知直线l1:x+y-1=0，现将直线l1向上平移到直线l2的位置，若l2,l1和两坐标轴围成的梯形的面积是4，求l2的方程.