题目

Blue Lightning Sally loved cars more than anything else. This spring she thought of building a go-kart to enter for the Go-Go Race. So she asked her dad for help. “Well,” he said. “How about this: you do some research first and then come back to me with a design.” A week later, Sally brought her notes and drawings to Dad. She named her go-kart “Blue Lightning”. Dad looked over her work, thinking. “Well, that’s interesting,” he said. “Have a try. Just build Blue Lightning as you’ve designed.” Over three weekends of hard work, Sally turned her design into a real, w17．已知|x+y-3|+（x-2y）2=0，则（　　）A．$\left\{\begin{array}{l}{x=-1}\\{y=-2}\end{array}\right.$B．$\left\{\begin{array}{l}{x=-2}\\{y=-1}\end{array}\right.$C．$\left\{\begin{array}{l}{x=2}\\{y=1}\end{array}\right.$D．$\left\{\begin{array}{l}{x=1}\\{y=2}\end{array}\right.$