[单项选择]Stack is quite simple. Many computer systems have stacks built into their circuitry. They also have machine-level instructions to operate the hardware stack. Stack is（）in computer systems.
A. useless
B. not important
C. simple but important
D. too simple to be useful

[单项选择]Stack is quite simple. Many computer systems have stacks built into their circuitry. They also have machine-level instructions to operate the hardware stack. Stack is ______ in computer systems.
A. useless
B. not important
C. simple but important
D. too simple to be useful

[单项选择]As computer systems become even more sophisticated, the methods of those who exploit the technology.（　）
A. so too do
B. as well as
C. likewise
D. therefore

[单项选择]Computer systems consist of two very different types of elements: (71 ) , which includes all the physical things that can be touched and Software, which tells the hardware how to do.
A. Operating system
B. I/O devices
C. Courseware
D. Hardware

[单项选择]

Most computer systems are (71) to two different groups of attacks：insider attacks and outsider attacks．A system that is known to be (72) to an outsider attack by preventing (73) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (74) users．Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment,but also helps to prevent future attacks．These attacks are usually (75) by tools referred to as Intrusion Detection Systems．

（71）处填（）。
A. vulnerable
B. week
C. helpless
D. sensitively

[单项选择]Many scientists have been probing psychological problems,（　）.
A. solving
B. exploring
C. settling
D. handling

[单项选择]Ted: Do you have to have that TV on quite so loud Paul: ________, is it bothering you
A. Yes, I have to
B. I’m sorry
C. Yes, enjoy yourself
D. Excuse me

[单项选择]Paul:Do you have to have that TV on quite so loud
Carol:（） Is it bothering you
Paul: Yes, I'm trying to sleep.
A. Oh,ltm sorry
B. Oh,excuse me
C. No. I don't
D. Yes,I have to

[简答题]Although many cities have achieved a financial profit by hosting the Games, the Olympics can be financially risky.

[单项选择]Many countries have a tradition of inviting foreigners to rule them. The English called in William of Orange in 1688, and, depending on your interpretation of history, William of Normandy in 1066. Both did rather a good job. Returning the compliment, Albania asked a well-bred Englishman called Aubgrey Herbert to be their king in the 1920s. He refused-and they ended up with several coves called Zog.
America, the country of immigrants, has no truck with imported foreign talent. Article two of the constitution says that "no person except a natural-born citizen.., shall be eligible to the office of the president". This is now being challenged by a particularly irresistible immigrant: Arnold Schwarzenegger.
Barely a year has passed since the erstwhile cyborg swept to victory in California’s recall election, yet there is already an Amend-for-Arnold campaign collecting signatures to let the Austrian-born governor have a go at the White House. George Bush senior has weighed in on his
A. lacks means of transportation for
B. never discriminate
C. have no vehicle to
D. refuses to consider