听力原文：What are the effects caused by tiredness in workers？
(31)
A. Having more accidents.
B. Losing mental and physical abilities.
C. Spending more time working.
D. Needing more education and training.
查看答案
【B16】
A. in
B. at
C. by
D. with
【B14】
A. live
B. recognize
C. identify
D. realize
【B8】
A. cherished
B. ignored
C. dismissed
D. forgot
Which of the following statements best describes the organization of the passage？
A. The author presents advantages and disadvantages of plankton as a food source.
B. The author quotes public opinion to support the argument for fanning plankton.
C. The author classifies the different food sources according to amount of carbohydrate.
D. The author makes a general statement about plankton and then moves to a specific example.
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