2. 外语
  3. The Consumer Price Index (CPI) is a measure of the average change over time in the prices paid by urban consumers for a market

The Consumer Price Index (CPI) is a measure of the average change over time in the prices paid by urban consumers for a market

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问题     The Consumer Price Index (CPI) is a measure of the average change
over time in the prices paid by urban consumers for a market basket of con
sumer good and services. The CPI affects nearly all Americans because of (1)______
the many ways which it is used. Three major uses are: Firstly, as an econom- (2)______
ic indicator. The CPI is the most widely used measurement of inflation and (3)______
is sometimes viewed as an indicator of the effectiveness of government eco
nomic policy. It provides informations about price changes in the nation’s (4)______
economy to government, business, labor, and other private citizens, and is
used by them as a guide to make economic decisions. Secondly, as a deflator (5)______
of other economic series. The CPI and its components are used to adjusting (6)______
other economic series for price changes and to translate these series into in
flation-free dollars. An interesting example of these is the use of the CPI as (7)______
a deflator of the value of the consumer’s dollar to find its purchasing power.
The purchasing power of the consumer’s dollar measures the change in the
value to the consumer of goods and services that a dollar will buy at differ
ent dates. By other words, as prices increase, the purchasing power of the (8)______
consumer’s dollar declines. Third, as a means of adjusting dollar values. The (9)______
CPI is often used to adjust consumer’s income payments; to adjust income (10)______
eligibility levels for government assistance; and to automatically provide
cost-of-living wage adjustments to millions of American workers.
(9)
选项
答案Third — Thirdly
解析 表示序列时，所用的序数词应当保持前后一致。如果一开始用first，后面依次用second，third等；如果一开始用firstly，后面依次用secondly,thirdly等。前文中“第一”、“第二”用的都是副词firstly,secondly。所以，这里应该用thirdly。
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