单项选择题

Refer to the following graphs for Questions.



Approximately what percent of textile imports in 1991 came from cotton

A． 18%
B． 25%
C． 28%
D． 35%
E． 40%
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单项选择题
What was the approximate average yearly increase in the cost of wool from 1996 to 2000, inclusive
A． $1,250
B． $2,000
C． $3,300
D． $5,0O0
E． $10,000
单项选择题
The author’s argument is developed primarily by the use of
A． an attack on poorly constructed sleep research studies
B． a critique of recent scientific studies on REM-sleep
C． a warning against getting too little sleep
D． an analogy between human and non-human sleep processes
E． an overview of specific processes that may occur during different stages of sleep in humans
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