解析　句意为：这个农民在经历多次试验和失败后，终于造出了一架成功起飞的自制飞机。eventually最终。

9. of their bad habits，the boys changed from being dependent on their parents to for others.

A.Having rid；sacrificing

B.To rid；sacrifice

C.Rid；sacrificing

D.Having been rid；sacrifice

答案　C

解析　句意为：摆脱了他们的坏习惯后，男孩们从依赖父母转变成了为别人奉献自己。根据词组rid...of...可知，rid和the boys为动宾结构，因此第一空用过去分词作状语；第二空from...to...，to为介词，用动名词作宾语。

10.The fast popularity of cloud computing means netizens will need to take added measures to make sure their data stays in the digital age.

A.secure B.stable

C.particular D.accurate

答案　A

解析　句意为：在这个数字时代，云计算的快速普及意味着网民们需要采取更多的措施来确保他们的数据安全。secure安全的，符合语境，故选A项。stable稳定的；particular特别的；accurate精确的。

Ⅱ.完形填空

　　You're surrounded by robots and you probably don't even know it.Most are not all that 11 and they won't come up to you and speak like a friend. 12 you're unaware of them，they know you're there.Robots are monitoring 13 in hospitals，providing banking services， 14 people from burning buildings and assisting astronauts in 15 .Robots are everywhere.

　　Are robots 16 or deadly enemies？Robotic expert Hans Moravec says intelligent robots today are no smarter than the average insect.But，don't feel too 17 about that.For example，army ants in South America 18 everything in their path when they go to war-forests，crops，buildings，people...

　　In case you 19 don't care about our little mechanical friends， 20 this：robot technology is currently 21 at a rate 10 million times faster than the evolution of 22 .

Considering the advances in robot technology during the upcoming years，Moravec says that