---I am going to take this summer holiday in Taiwan.
---Oh, really? Taiwan is ______ a beautiful island that ______ people in Guangdong go to visit it every year.
①绩麻
②日长
③各当家
求下列各式的相反数与绝对值.
2.5,﹣7,﹣π2,3-2,0.
若|2x﹣y|+(y﹣2)2=0,则x+y=____ .