题目

We couldn’t trust her for she is always____. Look, she___ some eggs on the table and said these newly- ____ eggs were her own. In fact they were her neighbor’s. A. lying; lay; laid   B. laying; lied; lain    C. lying; laid; laid       D. laying; lay; lain 答案：C 将抛物线y＝3x2向左平移2个单位，再向下平移1个单位，所得抛物线为 [　　] A．y＝3(x－2)2－1 B．y＝3(x－2)2＋1 C．y＝3(x＋2)2－1 D．y＝3(x＋2)2＋1