完形填空。 Several days ago my family and I went sledding(雪橇)and as I watched my children climbing up the slope (斜坡), I started thinking. Many people believe that most of today's social 1 are because of the 'me' generation; teenagers just care about themselves and pay no 2 to others. Some even think today's teenagers won't do anything 3 there is something in it for them. Yet, while watching, I saw a 4 side of teenagers. I watched my two oldest children take my youngest by the hand to help her 5 up the slope. They would have been 6 without her, 7 not once did they try to set off without her. And when the sled 8 my two daughters was aimed 9 the embankment (路堤), it was my five-year-old son who ran to them to stop them from falling and 10 themselves. Don't get me wrong; these children sometimes 11 among themselves to get the things they want. But I can take them to the shop and know that they won't 12 anything, I can talk to them about the 13 and know that they will offer to send some of their own money to 14 the people in the disaster area, and I can ask them to 15 with those children left alone and know that they will do their best to befriend them. Perhaps it's not the 'me' generation that 16 many of society's problems - not the teenagers who want 17 ,but the adults in their lives who have taught them to 18 think only of themselves and to want everything. Most young children want to help. We can 19 that feeling to continue into adulthood by teaching the lesson my children learned while sledding: Life is a slippery slope, but we can all make it to the 20 if we remember to help others. (     )1. A. problems (     )2. A. money (     )3. A. until (     )4. A. different (     )5. A. sign (     )6. A. happier (     )7. A. but (     )8. A. knocking (     )9. A. across (     )10. A. supporting (     )11. A. share (     )12. A. care about (     )13. A. dream (     )14. A. help (     )15. A. quarrel (     )16. A. cause (     )17. A. nothing (     )18. A. politely (     )19. A. force (     )20. A. origin B. troubles B. worry B. unless B. same B. hold B. faster B. so B. making B. beyond B. running B. shout B. ask for B. weather B. favor B. struggle B. provide B. something B. selfishly B. request B. top C. matters C. care C. although C. strange C. climb C. slower C. and C. dropping C. towards C. crying C. fight C. look for C. reason C. treat C. play C. act C. everything C. generously C. remember C. realism D. difficulties D. attention D. when D. similar D. clean D. higher D. for D. carrying D. around D. hurting D. talk D. think about D. earthquake D. relax D. deal D. shake D. anything D. usefully D. encourage D. start