[CR. ] 請教一題
Q:
Worldwide retail sales of home entertainment systems, which include a
television and an audio system, increased twenty-five percent this year
over last year. At the same time worldwide retail sales of new automobiles
declined by about the same percent. These statistics show that consumers
can no longer afford to purchase both types of products during the same year.
Which of the following, if true, would cast most serious doubt on the
conclusion drawn above?
A. Fewer advertisements for new cars appeared on television during the most
recent year than during the previous year.
B. Consumers are spending more money on home entertainment systems than
on new cars.
C. People who own home entertainment systems do not drive their automobiles
as often as other people.
D. Prices of home entertainment systems and new cars were higher during
the most recent year than during the previous year.
E. The reliability of automobiles this year improved significantly over last
year.
答案是: E (請開燈)
請問要怎麼思考?
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