题目内容
（请给出正确答案）
（）is the first line of protect between your computer and the public Internet.
A.The Internet protocolB.The firewallC.The anti-virus software D.The intrusion-detection systems
如果结果不匹配，请 联系老师 获取答案
更多“（）is the first line of protect…”相关的问题
● The line of computing jobs waiting to be run on a computer system might be a (71) . The jobs are serviced in the order of their arrival, that is, the first in is the first out.
(71)
A. queue
B. stack
C. array
D. record
A．queue
B．stack
C．array
D．record
The line of computing jobs waiting to be run on a computer system might be a(71). The jobs are serviced in the order of their arrival，that is，the first in is the first out.
A．queue
B．stack
C．array
D．record
ussia？
A.He felt he was doing the right thing in line with Russian culture.
B.He felt embarrassed for having broken a Russian custom.
C.Hefelt he was making a mistake.
D.He felt excited about his romantic experience
NAC's (Network Access Control)role is to restrict network access to only compliant endpoints and (1) users. However, NAC is not a complete LAN (2) solution; additional proactive and (3) security measures must be implemented. Nevis is the first and only comprehensive LAN security solution that combines deep security processing of every packet at 100Gbps, ensuring a high level of security plus application availability and performance. Nevis integrates NAC as the first line of LAN security (4) In addition to NAC, enterprises need to implement role--based network access control as well as critical proactive security measures-real-time, multilevel (5) inspection and microsecond threat containment.
A． automated
B．distinguished
C．authenticated
D．destructed
During the past years, intelligent technology has evolved(116)three generations. The first was characterized by tools such as prolog and OPS. prolog is a simple backward-chaining environment, and OPS is a simple forward-chaining environment. This led to the second generation of knowledge-engineering environments. Its goal was to model, prototype and construct(117)systems.All three generations were oriented toward generic(118)and represented generalized implementation environments for the construction of expert systems. knowledge bases and AI applications.Some of the solution-oriented products are also seamlessly integrated with generic knowledge-engineering environments, permitting end users to add(119) rules and objects, as well as predefined knowledge-based logic to address problems in manufacturing simulation.Marketplace orientation is rapidly(120)toward solution-oriented intelligent product environments. the fourth generation represents a new line of thinking and ' develop-merit by commercial fu-ms. will reduce the cost risk and development time associated with problem solving.
A．custom
B．knowledge
C．through
D．problem solving
（66）A. automated B. distinguished C. authenticated D. destructed
（67）A. crisis B. security C. favorable D. excellent
（68）A. constructive B. reductive C. reactive D. productive
（69）A. defense B. intrusion C. inbreak D. protection
（70）A. port B. connection C. threat D. insurance
阅读理解
阅读下面的文章，根据文章内容，完成相应的选择题。
FOOD SAFETY
A question that often troubles food companies is how to control problems like rats and insects without harming the food. Pest control experts say poisons should never be used where they may enter food. They say the first line of defense against pests is to clean the places where the food is handled or stored.
Floors, food preparation surfaces and tools can be disinfected with chemicals like chlorine, iodine or bromine. Food containers should be stored about half a meter off the ground and about half a meter away from any walls. Storage areas should be kept dry and clean.
Containers for raw materials such as rice, wheat, etc. should be kept closed and clean. Any foodstuff split during delivery or handling should be cleared up both inside and outside the building. Pests enter a building from the outside, so pay attention to outer walls. Small stones can be used to cover the ground and block the growth of plants and the grass should be kept short to deny pests a place to live.
Check that doors and windows are completely closed. Also any hole that might allow pests to enter a building should be filled. Rats can enter through a hole the size of a coin. A mouse can pass through a hole half that size.
Supervisors should make a list of pest control measures to be taken by employees. This will aid the efforts and also help prepare for any inspections. In most countries, there is a food and drug administration bureau, or some agency with a similar name, which enforces rules nationwide, responsible for rules about the use of pesticides, etc. However, businesses where food is stored, prepared or sold must also follow state and local health laws. Most of these governmental departments or bureaus have their websites with information about food safety policies and other issues. People can easily access the information.
操作提示：通过题干后的下拉框选择题目的正确答案。
1. According to pest control experts, why should poisons never be used in food companies？ {A; B; C}
A. Because they may enter food.
B. Because they may kill rats.
C. Because they may be harmful to the plants.
2. What is the first line of defense against pests？ {A; B; C}
A. To check that doors and windows are completely closed.
B. To clean the places where food is handled or stored.
C. To fill any hole that might allow pests to enter a building.
3. How can floors, food preparation surfaces and tools be disinfected？ {A; B; C}
A. With smoke.
B. With water.
C. With chemicals.
4. Why should attention be paid to outer walls？ {A; B; C}
A. To prevent pests from entering a building from outside.
B. To keep moist from entering a building from outside.
C. To stop sun rays from entering a building from outside.
5. What dose the passage mainly talk about？ {A; B; C}
A. Why poisons should never be used where they may enter food.
B. Why the growth of plants should be blocked and grass be kept short.
C. How to control rats and insects without harming the food.
1.The uncle seldom spent much time in the country cottage because ______.
A.the roof of the cottage was falling
B.the cottage was in a bad condition
C.he was used to living abroad
D.there was no furniture in it
2.The word “crash” (Line 2, Paragraph 3) most probably refers to ______.
A.a cry of terror
B.a sudden ring
C.a sound of storm
D.a sudden noise
3.When they opened the bedroom door, they could see nothing at first because ______.
A.it was completely dark inside
B.dust was blown into their eyes
C.something strange blinded them
D.there was too much dust in the air
4.The narrator felt glad that he had stayed up late because ______.
A.he did not miss the exciting stories
B.he spent more time with his uncle
C.he had a lucky escape
D.he saw a strange sight
5.Which of the following can best describe the narrator’s uncle？()
A.Adventurous and good at storytelling
B.Humorous and good at making jokes
C.Good-tempered and sensible
D.Hospitable and wealthy
Credit card companies，too，quickly saw the potential for online shopping，and have installed things like online shopping insurance for people. If you ever have a problem with your online credit purchases，many credit card companies will happily refund(退还) your money and then set their claws on the company that wronged you. Now that’s buying power!
There are other bonuses for online shoppers，of course. No lineups，for one. No annoying mall shopping carts with broken wheels and kids crying because their parents won’t get them what they want.
When shopping online，consumers can sit down，have a coffee，and wear their slippers，not having to worry about their hair or parking，and just clicking through sale after sale. Comparison shopping couldn’t be any easier. And thanks to courier companies(快递公司) getting in on the act，you never need to wait longer than a day or two to get those all important purchases delivered right to your door.
No wonder so many companies are shaking their heads at traditional retailing and instead looking to the “virtual” world to attract online shoppers.
1.The underlined word “leery” in the first paragraph means being very sure.()
2.Consumer confidence in online shopping mainly relies on security in shopping.()
3.Internet giants, traditional retailers, courier companies and credit card companies have made contributions to the popularity of online shopping.()
4.The author think of the current online shopping as safe, convenient and fast.()
5. Nowadays many companies are trying to cooperate with the online shoppers instead of traditional retailers.()
