关于细菌细胞壁的功能，错误的是（）。A.支持细胞膜承受内部压力 B.维持细菌固有形态 发布时间：2017-05-30 12:58 │ 来源：www.tikuol.com 题型：单项选择题 问题： 关于细菌细胞壁的功能，错误的是（）。A.支持细胞膜承受内部压力B.维持细菌固有形态C.决定细菌细胞的分裂D.与细胞膜共同完成物质交换E.缺乏细胞壁细菌仍可存活
题型：单项选择题 国家国有资产管理委员会近日提出，到2010年底，通过调整和重组，要将现有的中央企业减少到80至100家，并培育出30至50家具有国际竞争力的大企业集团。要培育出具有国际竞争力的大企业集团，最重要的是[ ]A．实行企业兼并，强强联合B．重视科技创新，形成自主品牌 C．面向市场，生产适销对路的产品 D．遵守职业道德，诚信经营 查看答案
题型：单项选择题 下列物质所用的分离和提纯方法不正确的是A除氢氧化钠溶液中的硫酸钠，加入适量氢氧化钡溶液后过滤；B利用过滤方法分离硝酸钾与氯化钠；C通过灼热的氧化铜方法除去二氧化碳中混有的少量一氧化碳D除去一氧化碳中混有的少量二氧化碳通入氢氧化钠溶液； 查看答案
题型：单项选择题 完形填空. Last weekend, my kids along with few other kids from the neighborhood volunteered tohelp me wash my car. My l0-year-old daughter came up with the idea of ___l___other people's cars as well. It was pretty _2 _ outside and I had no plans to __3__being in the bright sun.She __4_ _wantedtogivelemonade (柠檬汽水 ) to passers-by for free. I had seen little kids__5__and sell fresh lemonade for a small cost but not free. Although I felt__6__,I decided to help her. __7__she asked me, "What if we__8__this a smile car wash?"I couldn't hold back my tears and__9__her and the other kids to go inside the house and come up with__10__ideas. While I kept myself busy in drying the car,the gang walked up to me with a(n)__11__with beautiful images of smiles. They had " Free Car Wash" written on it and the__12__of theirexercise was "smile" . It was pretty neat to see a team of kids ranging 5-11 years with the__13__to do something for others. All that seemed__14__and came right from their heart. Nothing seemed to__15__to them : their playtime,the heat outside-they just wanted to__16__others and do something nice in the community! I helped them make some fresh lemonade and brought out some additional__17__to helpclean cars. Passersby were__18__and one even shouted back to them saying " God Bless You, my kids..."One of them even tried giving them a$5 , which they refused. A pretty heartwarming__19__! I feel blessed by being__20__by such wonderful and loving souls.( )1.A. drying ( )2.A. quiet( )3. A. suggest ( )4. A. further ( )5. A. choose( )6. A. worried ( )7. A. Finally ( )8. A. show( )9. A. challenged( )10. A. creative ( )11. A. board( )12. A. purpose( )13. A. need ( )14. A. important( )15. A. matter ( )16. A. relax( )17. A. friends( )18. A. interested ( )19. A. scene( )20. A. supportedB.repairing B. hotB. avoidB. thereforeB. enjoyB. popularB. Simply B. leaveB. expected B. readyB. pictureB. troubleB. duty B. disappointingB. object B. tryB. rags B. amazed B. gift B. understood C. washing C. different C. continueC. already C. buy C. confused C. ThenC. makeC. invited C. changedC. ideaC. secretC. imagination C. hopeful C. belongC. helpC. children C. bored C. storyC. refused D.decorating D. dirty D. practise D. hardlyD. serveD. difficult D. LuckilyD. order D. encouraged D. familiarD. car D. theme D. skill D. natural D. refer D. smile D. fruit D. frightenedD. explanationD. surrounded 查看答案