语篇解读　本文为一篇说明文。飞行器能够像骑自行车一样飞来飞去一直是许多发明家长期以来的梦想，文中介绍了两家研发飞行器的公司的最新产品，他们有可能促使这个梦想成为现实。

1.We can learn from the passage that the Hoverbike .

A.can hardly get in and out of small spaces quickly

B.can fly for over 30 minutes，up to 1,000 meters high

C.has been used by the police and emergency rescue teams

D.can be transported quickly after being folded and packed

答案　D

解析　细节理解题。根据第二段中的"the Hoverbike is able to get in and out of small spaces very quickly.'It can be moved across continents very quickly because it can be folded and packed'"可知，Hoverbike能够很快地进出小空间。它可以快速地跨洲移动，因为它可以折叠和包装。分析选项可知，D项正确。

2.The writer uses the example of Formula One racing car to show that .

A.Jetpack is very safe and reliable

B.Jetpack's engine is powerful

C.Jetpack's actual structure is unique

D.Jetpack can reach a great speed and height

答案　A

解析　推理判断题。根据第六段中的"...reliability is the most important element of it.We have safety built into the actual structure itself..."可知，安全性、可靠性是最重要的考虑因素，故选A项。

3.The underlined word "it" in the last paragraph refers to "".

A.the jet stream B.the engine

C.Jetpack D.the parachute

答案　D

解析　代词指代题。根据最后一段中的"Mr Coker says it also has a parachute(降落伞) that can be used should there be an emergency.'It starts to work at very low altitude...'"可知，由此可知it指的是parachute(降落伞)。故选D项。