胆囊结石并发急性胆石性胰腺炎的病理解剖条件中哪一项是错误的A．胆囊多发小结石B．胆囊

For a moment nothing happened.Then ________ all shouting together.

A．voices had come

B．came voices

C．voices would come

D．did voices come

现金日记账和银行存款日记账属于( )。

A．序时账

B．分类账

C．备查账

D．总账

2003年10月16日6时23分，“神舟”五号载人飞船在内蒙古成功着陆，返回舱完好无损．飞船在重返大气层时，由于同空气的剧烈摩擦，船体的表面温度将上升到2000℃～3000℃，因此飞船表面必须有良好的防高温措施．下列有关飞船的防高温措施中不可取的是（　　）

A．使用陶瓷类的贴面覆盖船体，以防止高温侵入舱内

B．使用在一定条件下能熔化或气化的表面覆盖材料

C．使用在-定条件下能与大气层中的氧气发生剧烈燃烧的表面覆盖材料

D．使用在一定条件下能发生分解反应的表面覆盖材料

消防产品有下列哪些情况时，应进行型式检验（）。

A.新产品试制的定型检验

B.正式生产后，在结构、材料工艺上有较大改变，可能影响产品性能时

C.产品正常生产满2年时

D.产品停产1年后恢复生产时

E.国家质量监督机构提出型式检验要求时

Though it is mere 1 to 3 percent of the population, the upper class possesses at least 25 percent of the nation’s wealth. This class has two segments: upper-upper and lower-upper. Basically, the upper-upper class is the "old rich"—families that have been wealthy for several generations—an aristocracy of birth and wealth. Their names are in the Social Register, a listing of acceptable members of high society. A few are known across the nation, such as the Rockefellers, Roosevelts, and Vanderbilts. Most are not visible to the general public. They live in grand seclusion, drawing their income from the investment of their inherited wealth. In contrast, the lower-upper class is the "new rich". Although they may be wealthier than some of the old rich; the new rich have hustled to make their money like everybody else beneath their class. Thus their prestige is generally lower than that of the old rich, who have not found it necessary to lift a finger to make their money, and who tend to look down upon the new rich.

However its wealth is acquired, the upper class is very, very rich. They have enough money and leisure time to cultivate an interest in the arts and to collect rare books, painting, and sculpture. They generally live in exclusive areas, belong to exclusive social clubs, communicate with each other, and marry their own kind—all of which keeps them so distant from the masses that they have been called the out-of-sight class. More than any other class, they tend to be conscious of being members of a class. They also command an enormous amount of power and influence here and a broad, as they hold many top government positions, run the Council on Foreigh Relations, and control multinational corporations. The actions affect the lives of millions.

The reason why the "old rich" look down upon the "new rich" is that（）

A. the former are wealthier than the latter

B. the latter sweat themselves to make money

C. the "new rich" have no interest in arts

D. the "old rich" are conscious of being members of the upper class