题目内容
（请给出正确答案）
The average number of hours of sleep that an adult needs is ______.
A．approximately six hours
B．around ten hours
C．about eight hours
D．not stated here
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A.The year-end number of shares outstandin
B.The beginning of the year number of shares outstandin
C.The average of the beginning and the year-end number of shares outstandin
D.The weighted average of shares outstanding for the year.
A．A change in the nature of reading.
B．An increase in the number of books.
C．A change in the status of educated people.
D．An increase in the average age of readers.
A．that
B．what
C．which
D．how
A．18 million
B．250, 000
C．half of the world's population
D．60 million
A．whether the species is considered to be a pest
B．whether the species enters by a closely-checked route
C．the rate at which the species extends geographically
D．the magnitude of the average number of the species
Which of the following stock market indexes is based on the smallest number of stocks？
A．The Standard kind Poor's Composite Index
B．The New York Stock Exchange Composite Index
C．The Dow-Jones Industrial Average
D．The Standard and Poor's Industrial Index
The number of refereeing errors in the experimental matches was ________.
A) slightly above average
B) higher than in the 1998 World Cup
C) quite unexpected
D) as high as in a standard match
A．Because their number is growing and they are more active.
B．Because senior citizens have more experience than others.
C．Because their average life span is longer.
D．Because they do more work now.
A.accounts receivable turnover rate is approximately 4.4 times.
B.accounts receivable turnover rate is approximately 5 times.
C.average number of days to collect an account receivable is 48 days.
D.accounts receivable turnover rate is approximately 13.3 times.
Part B
Below is a graph showing the average number of hours a student spends on the computer per week. Look at the graph and write an essay of about 120 words making reference to the following points:
(1)The change of the hours a student spends on the computer per week from 1995 to 2005;
(2) The possible reasons of the change and the problems and difficulties college students face when they use computers.
