automobiles,although China has already ranked top 3 for ethanol production all over the world. 6.References [1]Gray,Kevin A,L.Zhao,and M.Emptage."Bioethanol."Current Opinion in Chemical Biology 10.2(2006):141-146. [2]Sarkar,Nibedita,et al."Bioethanol production from agricultural wastes:an overview."Renewable Energy 37.1(2012):19-27 [3]Balat,Mustafa,H.Balat,and C.Oz."Progress in bioethanol processing." Progress in Energy Combustion Science 34.5(2008):551-573. [4]Wyman,Charles E."Handbook on bioethanol production and utilization." Applied Energy Technology(1996). [5]Limayem,A,and S.C.Ricke."Lignocellulosic biomass for bioethanol production:current perspectives,potential issues and future prospects. Progress in Energy Combustion Science 38.4(2012):449-467 [6]Sanchez,Oj,and C.Cardona."Trends in biotechnological production of fuel ethanol from different feedstocks."Bioresource Technology 99.13(2008):5270. [7]张树利."乙醇汽油在中国."北京汽车6(2001)：17-17automobiles, although China has already ranked top 3 for ethanol production all over the world. 6. References [1] Gray, Kevin A, L. Zhao, and M. Emptage. "Bioethanol." Current Opinion in Chemical Biology 10.2(2006):141-146. [2] Sarkar, Nibedita, et al. "Bioethanol production from agricultural wastes: an overview. " Renewable Energy 37.1(2012):19-27 [3] Balat, Mustafa, H. Balat, and C. Öz. "Progress in bioethanol processing." Progress in Energy & Combustion Science 34.5(2008):551-573. [4] Wyman, Charles E. "Handbook on bioethanol : production and utilization." Applied Energy Technology (1996). [5] Limayem, A, and S. C. Ricke. "Lignocellulosic biomass for bioethanol production: current perspectives, potential issues and future prospects. " Progress in Energy & Combustion Science 38.4(2012):449-467. [6] Sanchez, Oj, and C. Cardona. "Trends in biotechnological production of fuel ethanol from different feedstocks." Bioresource Technology 99.13(2008):5270. [7] 张树利. "乙醇汽油在中国." 北京汽车 6(2001):17-17