The biggest obstacle to healthier economic performance, though, is political. As the Fed's chairman, Alan Greenspan, acknowledged in the closing months of 2002, uncertainty about the future is holding both investors and consumers back. The shadowy threat of international terrorism and the much more explicit prospect of a war with Iraq have made many Americans nervous about the future. For businesses still reeling from the speed at which the late-1990s boom turned to slump, the political climate is one more reason to put off investing in new plant and equipment or hiring new staff. For consumers, for so long the mainstay of the American economy, the thrill of the shopping mall seems, finally, to be on the wane.
It is hard to put a favorable interpretation on most of the data. But it is important to keep a sense of perspective. Some recent figures look disappointing partly because they fall short of over-optimistic forecasts -- a persistent weakness of those paid to predict the economic future, no matter how often they are proved wrong. The Fed will be watching carefully for further signs of weakness during the rest of the month. Mr. Greenspan is an avid, even obsessive, consumer of economic data. He has made it clear that the Fed stands ready to reduce interest rates again if it judges it necessary--even after 12 cuts in the past two years. At its last meeting, though, when it kept rates on hold, the Fed signaled that it did not expect to need to reduce rates any further.
Monetary policy still offers the best short-term policy response to weak economic activity, and with inflation low the Fed still has scope for further relaxation. President Bush's much-vaunted fiscal stimulus is unlikely to provide appropriate help, and certainly not in a timely way.
Which of the following best describes the America's economic situation?
A.It is recovering.
B.It faces an uncertain future.
C.It remains depressing.
D.It shows unreliable signs.
第5题
pH值的定义是
A、溶液中氢氧根离子浓度的对数
B、溶液中氢离子活度的对数
C、溶液中氢离子活度的负对数
D、溶液中氢离子浓度的对数
E、溶液中氢离子浓度的负对数
第6题
pH的定义是
A、溶液中氢氧根离子浓度的对数
B、溶液中氢离子活度的对数
C、溶液中氢离子活度的负对数
D、溶液中氢离子浓度的对数
E、溶液中氢离子浓度的负对数
第7题
对pH的定义,下列哪项最准确()。
A、溶液中氢离子浓度的对数
B、溶液中氢氧根离子浓度的对数
C、溶液中氢离子活度的负对数
D、溶液中氢离子活度的对数
E、溶液中氢离子浓度的负对数
第8题
下列说法不正确的是
A、血液pH代表血液的酸碱度
B、血液pH等于氢离子浓度的负对数
C、pH正常可排除酸碱平衡紊乱
D、pH>7.45为碱血症
E、pH<7.35为酸血症
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