题目

重庆一中渝北校区为奖励“我的中国梦”寒假系列实践活动的获奖学生，学校准备在某商店购买A，B两种文具作为奖品，已知一件A种文具的单价比B种文具的单价便宜4元，而用300元买A种文具的件数是用200元买B种文具的件数的2倍. （1）求A种文具的单价； （2）根据需要，学校准备在该商店购买A，B两种文具共200件，其中A种文具的件数不多于B种文具件数的3倍.为了节约经费，当购买A，B两种文具各多少件时，所用经费最少？最少经费为多少元？. 第二节 完型填空（共20小题；每小题1.5分，满分30分） What seemed impossible is possible nowadays. One spring afternoon last year a group of   36  attacked a 15-year-old girl in the Berlin district of K??penick. They hit her in the face and pushed her to the ground. When the victim   37   to hand over her money, some of them held her down and   38  her arms with a lighted cigarette. The   39   were not a gang of boys, but of 13- to 15-year-old girls. While men are still responsible for the  40  of crimes in Germany,  41   violence is on the rise. Young girls and women of all  42  groups are becoming more violent, and that has been a   43   trend for several years. Last year in Berlin, the   44   of female suspects of violent crime under the age of 21 increased by almost 8%, while that of male suspects   45   slightly. Violent crimes like  46 and serious bodily harm have even shot up by 18% and 25% among young women. Why are   47   women becoming more violent? Gender (性别)   48   may have something to do with it. Today's females are drinking and smoking more, and raising all sorts of   49   things. Girls and young women are generally less held back in adopting male forms of behavior.  50  , the same goes for the   51   of violence. The members of all-female gangs tend to be especially   52  . When particularly humiliating methods like burning or undressing are involved, the   53   will usually be girls. It seems to be all about showing the   54  , “Hey, we can do   55   than you.”  36. A. terrorists 37. A. refused 38. A. twisted 39. A. fighters 40. A. majority 41. A. strong 42. A. working 43. A. worldwide 44. A. number 45. A. remained 46. A. drug taking 47. A. stupid 48. A. difference 49. A. dirty 50. A. However 51. A. use 52. A. beautiful 53. A. watchers 54. A. parents 55. A. faster B. thieves B. tried B. beat B. attackers B. variety B. daytime B. activity B. nationwide B. degree B. changed B. theft B. uneducated B. equality B. surprising B. Therefore B. belief B. cruel B. victims B. teachers B. better C. teenagers C. managed C. tied C. students C. most C. secret C. age C. school C. quantity C. happened C. robbery C. homeless C. relations C. unbelievable C. Unfortunately C. love C. young C. helpers C. boys C. more easily D. passers-by D. decided D. burned D. criminals D. few    D. female D. interest D. family D. quality D. dropped     D. poisoning D. German D. roles D. useless D. Finally D. rise D. boyish   D. performers D. people D. more efficiently