题目

函数的部分图像如图所示，则的解析式为（     ） A.           B.  C. D.   答案：A In China, middle school students are getting _________sleeping hours than before. Most students can only sleep less than eight_________ every night, because they have too much homework to do. Their teachers give them some homework _________ their parents give some, too. Also some students don’t_________ how to save（节省） time. They are not careful when they do their_________. So they_________ more and more time. Some students spend ________ time watching TV or playing computer games. They stay up very________. Some students have to get up very early every ________on weekdays to get to school on time by bus or by subway. It may be a long way. Schools and parents should cut down some of the homework so that the children can enjoy at least eight hours of _________every night. If they have enough sleep time, they will find it much better for their study and health.【1】A.shorterB.longerC.shortD.long【2】A.weeksB.daysC.hoursD.years【3】A.butB.andC.orD.so【4】A.seeB.watchC.wonderD.know【5】A.homeworkB.houseworkC.exerciseD.English【6】A.spendB.takeC.buyD.bring【7】A.manyB.fewC.muchD.little【8】A.earlyB.lateC.slowD.fast【9】A.nightB.afternoonC.eveningD.morning【10】A.studyB.sleepC.sportsD.work