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[originaltext]Economics and weather have a lot in common. Knowing what conditio
[originaltext]Economics and weather have a lot in common. Knowing what conditio
游客
2024-02-18
27
管理
问题
Economics and weather have a lot in common. Knowing what conditions will be like weeks or months in the future is not easy. One thing that helps economists predict the future is the index of leading economic indicators.
An index is a way to measure changes in a group of numbers over time. In financial markets, for example, an index of stocks will rise or fall with changes in the wider market. The changes measured by an index can be represented with a single percentage. The index may start at a base period of time with a value of one hundred. Now say that a month later the value is recorded as one hundred one. That means it gained one percent. If the index lost one percent, however, the value would be ninety nine.
The leading economic indicators are really ten indexes. Four deal with manufacturing activity. One deals with unemployment claims, Another measures people’s expectations of the economy. Still others involve financial information like the money supply and interest rates. The index of leading indicators is just one of the tools used to measure the business cycle. A measure called the coincident index provides information about current conditions. Employment rates are an important part of it. There is also a lagging index. It helps confirm economic changes that currently appear to be taking place. Interest rates are an important lagging indicator.
Why is economics comparable to weather according to the passage?
How is index used to measure the changes in economy?
选项
A、They use unemployment rates to judge the decline measured by the index.
B、They use the interest rates to confirm the growth of economy.
C、They use percentage to represent the changes weighed by the index.
D、They use stocks as the measurement of development in market.
答案
C
解析
本题问“怎样使用指标来衡量经济中的变化?”短文提到,The changes measured by an index can be represented with a single percentage. 即根据指标测量体系测出的经济变化可以用单纯的百分比来表示。短文随后又对这种指标衡量体系进行了具体的解释。据此可以断定[C]“使用百分比来表示指标测量出来的文化”正确。
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