题目

—Did Peter fix the computer himself?   —He ____, because he doesn’t know much about computers. has it fixed  B. had fixed it  C. had it fixed  D. fixed it 答案：C 解析: 译文：—Peter 自己修理电脑吗? —他请人修理了电脑, 因为他不太懂电脑. 考点：时态及特殊动词用法. 主动式to have , make, let sb do sth →被动式 to have, make sth done  注意 let sth be done; 注意to get sb to do sth→to get sth done 请,让,命令某人做某事 e.g. ① A barber cannot have his own hair cut, so he’ll get another barber to 如图所示，电路两端的总电压一定．当滑动变阻器的滑片从A端滑到B端时，电压表前后两次的示数之比为4∶3，则电路前后两次消耗的总功率之比为 [　　] A．4∶3 B．4∶5 C．5∶4 D．9∶16