导游员的步态要给人一种＿＿＿＿＿、稳健庄重的感觉。

数据库系统与文件系统的最主要区别是【 】。

A．数据库系统复杂,而文件系统简单

B．文件系统不能解决数据冗余和数据独立性问题,而数据库系统可以解决

C．文件系统只能管理程序文件,而数据库系统能够管理各种类型的文件

D．文件系统管理的数据量较少,而数据库系统可以管理庞大的数据量

现阶段，我国实行以按劳分配为主体，多种分配方式并存的分配制度。据此回答1～3题：

1．这项制度是由                      决定的 [ ]

A．我国的人口形势

B．我国的国家性质 

C．我国的基本经济制度

D．企业的经济效益 

2．这项制度 [ ]

①坚持了社会主义方向

②适应了现阶段的基本经济制度

③有利于发展生产力

④可以防止收入差距悬殊现象 

A．①②③

B．②③④

C．①③④

D．①②③④ 

3．这一主体分配方式是由                  在我国国民经济中占主体地位决定的  [ ]

A．国有经济

C．集体经济 

B．公有制经济

D．私营经济

"You are not here to tell me what to do. You are here to tell me why I have done what I have already decided to do," Montagu Norman, the Bank of England’s longest-serving governor (1920-1944), is reputed to have once told his economic adviser. Today, thankfully, central banks aim to be more transparent in their decision making, as well as more rational. But achieving either of these things is not always easy. With the most laudable of intentions, the Federal Reserve, America’s central bank, may be about to take a step that could backfire.

Unlike the Fed, many other central banks have long declared explicit inflation targets and then set interest rates to try to meet these. Some economists have argued that the Fed should do the same. With Alan Greenspan, the Fed’s much-respected chairman, due to retire next year—after a mere 18 years in the job—some Fed officials want to adopt a target, presumably to maintain the central bank’s credibility in the scary new post-Greenspan era. The Fed discussed such a target at its February meeting, according to minutes published this week. This sounds encouraging. However, the Fed is considering the idea just when some other central banks are beginning to question whether strict inflation targeting really works.

At present central banks focus almost exclusively on consumer-price indices. On this measure Mr. Greenspan can boast that inflation remains under control. But some central bankers now argue that the prices of assets, such as houses and shares, should also somehow be taken into account. A broad price index for America which includes house prices is currently running at 5.5%, its fastest pace since 1982. Inflation has simply taken a different form.

Should central banks also try to curb increases in such asset prices Mr. Greenspan continues to insist that monetary policy should not be used to prick asset-price bubbles. Identifying bubbles is difficult, except in retrospect, he says, and interest rates are a blunt weapon: an increase big enough to halt rising prices could trigger a recession. It is better, he says, to wait for a housing or stock market bubble to burst and then to cushion the economy by cutting interest rates—as he did in 2001-2002.

And yet the risk is not just that asset prices can go swiftly into reverse. As with traditional inflation, surging asset prices also distort price signals and so can cause a misallocation of resources—encouraging too little saving, for example, or too much investment in housing. Surging house prices may therefore argue for higher interest rates than conventional inflation would demand. In other words, strict inflation targeting—the fad of the 1990s—is too crude.

According to the text, it is upsetting that the Federal Reserve does not take into account inflation targets（）

A. until what to do is clarified

B. until explicit inflation targets are declared

C. until increases in asset prices are curbed

D. until its efficiency is cast doubt on

气质不具有（）

A.易变性

B.天赋性

C.稳定性

D.独特性

E.典型性

一般用手紧密接触热物体的最高温度大约为（）。

A、40℃

B、60℃

C、70℃

D、80℃