防火墙在网络安全中起着重要的作用，但是防火墙也有自己的局限性，它很难防范来自于（）的

My old college roommate, Bob, was no ordinary person. In the first _____, he did not come from an ordinary family, both his parents were famous. His father was a chess expert and rocket research (火箭研究) _____ for NASA. His mother had been an opera singer in Europe. _____, what made Bob unusual was_____ his parents were famous, he had _____ interest in school---he never studied and avoided(回避；躲开) activities that ____thinking. In general, he was quite different from his parents. In fact, you might think Bob was rather stupid, ____ you asked a question about a car. When it came to working with or knowing about cars, Bob was a genius(天才)! He could take a car _____, put it back together again, _____ any mechanical(机械) difficulty, or give you the correct statistics（统计数字）for any American car built in the last 20 years. There was ____ he did not know about _____. That was what made Bob so unusual.
After six months of college, he _____ all his classes and had to drop out. He left the school. After _____, he got a job in a garage (汽车修理厂) working with _     . In the end, I think he was secretly _____ that he had to leave school.

小题1:	A．time B．place C．word D．use

小题2:	A．actor B．player C．scientist D．lawyer

小题3:	A．However B．Though C．Certainly D．Of course

小题4:	A．because B．as C．instead D．though

小题5:	A．great B．special C．no D．never

小题6:	A．offered B．needed C．reported D．taught

小题7:	A．unless B．when C．if D．since

小题8:	A．away B．up C．clearly D．separately

小题9:	A．ask B．answer C．repair D．have

小题10:

A．very much B．very little C．so many D．a few

小题11:

A．his father B．his mother C．himself D．them

小题12:

A．passed B．chose C．wrote D．failed

小题13:

A．graduating B．leaving C．working D．mastering

小题14:

A．cars B．companies C．friends D．workers

小题15:

A．successful B．sorry C．funny D．happy