题目

函数的部分图象如图所示，为了得到的图象，只需将的图象（ ）A.向右平移个单位 B.向右平移个单位C.向左平移个单位 D.向左平移个单位 答案：【答案】B【解析】首先根据图象求出函数的解析式，进一步利用函数的图象变换求出结果．由图象知，，，，得，又，得，所以，为了得到的图象，所以只需将的图象向右平移个单位即可.故选：B信息归纳Jim is an English boy. he studies in No. 5 Middle School in Beijing. He gets up at 6:30 in the morning. And he washes his face and brushes his teeth. Then he goes to school by bus. He has four classes in the morning and two classes in the afternoon. He always helps his Chinese friends with English. He likes music, but he doesn't like math. He thinks it's difficult. He can play soccer and he is good at playing the piano and singing songs. On weekends, he usually goes to the zoo with his friends. He likes pandas because he thinks they are very cute.Information CardThe name of the boyThe time he gets upThe way he goes to schoolThe boy is good atThe animal he likes and the reason(原因)