[解析]
28.A 细节理解题.根据句子The Transition,which flew at 1,400 feet for eight minutes last month,can reach around 70 miles per hour on the road and 115 in the air.It flies using a 23-gallon tank of gas and bums 5 gallons per hour in the air.On the ground,it gets 35 miles per gallon.可以看出列出的都是Transition的基本数据,所以答案选A.
29.C 推理判断题.根据句子But don't expect it to show up in too many driveways.It's expected to cost﹩279,000.但不要指望它出现在太多的车道,它的预计成本﹩279000.由此可以推断出 Transition 太昂贵了,很少有人买得起,所以答案选C.
30.B 推理判断题.根据句子The government has already permitted the company to use special materials to make it easier for the vehicle to fly.政府已经允许该公司使用特殊材料,使车辆更容易飞行.可以推断出政府对于制造这种车是赞许的,favourable"赞许的".
31.D 标题大意题.根据文章第一段第一句可知新的飞行汽车已经完成了第一次飞行,使该公司更接近其在明年出售飞行汽车的目标.以及最后一段说一个车主需要通过一个测试,完成20个小时的飞行时间,由此可见Flying Car Closer to Reality符合本文的主旨,所以答案选D.