“$m=-1$”是“直线$mx+\left(2m-1\right)y+1=0$和直线$3x+my+3=0$垂直”的(     )

A

    When I was four, one day I was playing outside our house. I saw my grandfather's truck. It was black and looked better.” I got some paint and a brush which were left in the kitchen by my father. I painted the truck white and blue all over. I was finishing the job when my mum walked up and stopped me. She was worried that my grandfather would be angry. However, when my grandfather looked at my paintings on the truck, he laughed loudly. “Angela, that's the prettiest truck I've ever seen! I love it!”

    Sometimes adults (成年人) don't stop to see things through children's eyes. They missed so much beauty in the world. Luckily, my grandfather saw things in another way.

已知二次函数y=-3（x-1）²+k的图象上有三点A（$\sqrt{2}$，y₁），B（2，y₂），C（5，y₃），则y₁、y₂、y₃的大小关系为(        )

如图a是长方形纸带，∠DEF=24°，将纸带沿EF折叠成图b，再沿BF折叠成图c，则图c中的∠CFE的度数是____ ．

中考在即，请务必使你的积极情绪支配你的心灵，如多向老师或父母倾诉，缓解压力；学会思考，认真分析自己的优势，树立自信。这种调节情绪的方法是        ，认识评价自己的方法是        。（    ）