2014
高考英语阅读理解基础精品练习题（20）及答案 (2012•稳派教育新课改质检) an airbus a321 completed the one hour 10 minute flight from hamburg to frankfurt using a 50—50 mix of conventional and alternative fuel. the trial, which will last six months, will take on 1,200 flights. should the programme be successful, the use of biofuel—in this case biosynthetic kerosene(煤油) —will be extended to other routes. according to lufthansa the programme will reduce c
