A. are B. pandas C. fat D. this E. tiger
Ann and Sam are in the zoo.
Ann:What's ____?
Sam:It's a ____. It's big.
Ann:What ____ they?
Sam:They're ____. They're ____.
“它的规模从表面上看,远不如长城宏大,却注定要稳稳当当地造福千年。”由于它的修建,使成都平原成为富饶的“天府之国”。“它”位于战国时期哪一诸侯国境内( )
已知点A(a,5)与点A′(﹣2,b)关于经过点(3,0)且平行于y轴的直线对称,那么a+b=____ .