如图,在平面直角坐标系中,△ABC的三个顶点坐标分别为A(﹣2,1),B(﹣1,4),C(﹣3,2).
有一包粉末,已知其由BaCO3、Cu(NO3)2、Na2SO4、NaCl、NaOH中的几种组成,现对其做以下实验,各步骤均已经充分反应,请回答问题:
形近字组词
挺—____ 稻—____ 欺—____
庭—____ 蹈—____ 期—____
A:Our new school is big and nice. There is a gym in our school now.
B:Yes, and there is a big library, too.