左向右分流的先天性心脏病，下列哪项描述是错误的
A．易患肺炎
B．潜伏青紫
C．肺循环量少
D．胸骨左缘有粗糙收缩期杂音
E．影响生长发育
参考答案：C
把抛物线y=-x2的图象先向左平移1个单位，再向下平移3个单位，则平移后的抛物线的表达式为______．
Mrs West had a lovely dog. It has her life pleasure. [ ]
A. filled; of
B. full; with
C. filled; with
D. full; by
