题目

324有几个因数？所有因数的和是多少？ 答案：解：因为324=22×34，所以324=2m×3n，其中m=0，1，2；n=0，1，2，3，4，所以324的因数有：3×5=15（个）；因为（1+21+22）×（1+31+32+33+34）的展开式就是324的15个因数，所有因数的和是：（1+21+22）×（1+31+32+33+34）=7×121=847答：324有15个因数，所有因数的和是847．I found out one time that doing a __36____for someone could get you into a lot of trouble．I was in the eighth grade at the time, and we were having a final test．During the test, the girl sitting next to me ___37____ something, but I didn’t understand．So I __38______ her way and found out that she was trying to ask me if I had an extra pen．She showed me that hers was ____39_____ and would not write．I happened to have an extra one, so I took it out of my pocket and ____40_____ it on her desk．Later, after the test papers had been turned in, the teacher asked me to stay in the room when all the other students were____41_____．As soon as we were alone she began to talk to me about ____42____ it meant to grow up; she talked about how important it was to____43____ your own two feet and be responsible for your own ____44____．For a long time, she talked about honesty and emphasized the fact ____45____ when people do something____46____, they are really cheating themselves．She made me ____47____ that I would think seriously about all the things she had said, and then she told me I could leave．I walked out of the room ____48____ why she had chosen to talk to me about all those things．____49____, I found out that she thought I had cheated on the test．When she saw me lean over to talk to the girl next to me, it looked as if I was copying answers ____50____ the girl’s test paper．I ___51____ to explain about the pen, but all she____52____ say was that it seemed very strange to her that I hadn’t talked of anything about the pen the day she talked to me ____53____ after the test．____54____ I tried to explain that I was just doing the girl a favor by letting her use my pen, I was sure she ____55____ to believe that I had cheated on the test．【小题1】A．helpB．handC．favorD．fever【小题2】A．whisperedB．talkedC．toldD．spoke【小题3】A．turned overB．came over C．leaned overD．looked over【小题4】A．out of sightB．out of workC．out of placeD．out of ink【小题5】A．placeB．putC．gaveD．lent【小题6】A．punishedB．dismissedC．praisedD．parted【小题7】A．whatB．thatC．whichD．how【小题8】A．stand up B．stand onC．stand forD．stand by【小题9】A．attitudeB．activityC．actionD．behavior【小题10】A．whatB．ifC．thatD．where【小题11】A．honest　　B．dishonest　　C．modest　　D．disappointed【小题12】A．promise　　B．permit　C．recognize　　D．prove【小题13】A．wandering　　　B．reflecting　　C．understandingD．wondering【小题14】A．Long before　B．Therefore　C．Ever before　D．Later on【小题15】A．ofB．inC．fromD．on【小题16】A．managed　　　B．planned　　C．tried　　　D．promoted【小题17】A．could　　B．would　　C．canD．will【小题18】A．right　　　　B．only　　　C．slight　　　D．once【小题19】A．After　　　B．Until　　C．As if　　D．Even if【小题20】A．remained　　B．continued　C．kept　　　　D．wanted