单项选择题

"...nor does giving people breakfast improve performance" meads __________.

A．anyone without breakfast does improve his performance
B．not giving people breakfast improve performance
C．having breakfast does not improve performance, either
D．people having breakfast do improve their performances, too
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单项选择题
The main idea of the second paragraph is that __________.
A．random fluctuation can be eliminated from the transformation process from inputs into outputs
B．the transformation process from inputs into outputs can not' be free from random fluctuation
C．human errors are the sole causes for random fluctuation
D．the inherent problems in the transformation process are the most important for random fluctuation
单项选择题
The latest year for which figures could be obtained is __________.
A．the year the author wrote the article
B．1977
C．any year between 1977 and 1983
D．1983
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