下列关于防火墙部署说法错误的是（）。
A. 尽量选用性能最好的防火墙
B. 谨慎配置防火墙规则集
C. 做好安全审计
D. 及时更新防火墙版本
The first people to inhabit North America came from Asia. Scientists had hypothesized that
A. The landmass connecting North America and Asia extended very far to the north.
B. In Europe, maritime cultures primarily dependent on the sea for food developed no earlier than 10,000 years ago.
C. People living in Asia at the time the two continents were connected hunted land animals for food.
D. The landmass was so bitterly cold that its vegetation would have been too sparse to support land animals.
E. Sophisticated and mature North American and Asian cultures that display great similarities to each other existed as far back as 8,000 years ago.
People often do not make decisions by using the basic economic principle of rationally weighing all possibilities and then making the choice that can be expected to maximize benefits and minimize harm. Routinely, people process information in ways that are irrational in this sense. Any of the following, if true, would provide evidence in support of the assertions above EXCEPT:
A. People tend to act on new information, independent of its perceived relative merit, rather than on information they already have.
B. People prefer a major risk taken voluntarily to a minor one that has been forced on them, even if they know that the voluntarily taken risk is statistically more dangerous.
C. People tend to take up potentially damaging habits even though they have clear evidence that their own peers as well as experts disapprove of such behavior.
D. People avoid situations in which they could become involved in accidents involving large numbers of people more than they do situations where single-victim accidents are possible, even though they realize that an accident is more likely in the latter situations than in the former.
E. People usually give more weight to a physician"s opinion about the best treatment for a disease than they do to the opinion of a neighbor if they realize that the neighbor is not an expert in disease treatment.
For many people in the United States who are concerned about the cost of heating homes and
A. There are many competing uses for a finite supply of wood, and suppliers give the lumber and paper industries a higher priority than they give individual consumers.
B. Wood produces thick smoke in burning, and its extensive use in densely populated cities would violate federal antipollution guidelines.
C. There are relatively narrow limits to how far wood can be trucked before it becomes more economical to burn the gasoline used for transportation instead of the wood.
D. Most apartment dwellers do not have adequate storage space for the amount of wood necessary to supply energy for heating.
E. Most commercial users of energy are located within range of a wood supply, and two-thirds of United States homes are located outside of metropolitan areas.
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