单项选择题

According to the passage, which of the following is NOT a characteristic of REM sleep

A．The eyes dart around.
B．It lasts 8 to 15 minutes.
C．The delta rhythm is present.
D．The sleeper dreams.
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单项选择题
Which of the following can be the best title of the passage
A．The Father of American Public Education
B．Philosophy of Educational
C．Policies of Educational Institutions
D．Horace Mann and the Massachusetts State Board of Education
单项选择题
The word radical in the third paragraph is closest in meaning to ______.
A．equal
B．extreme
C．excellent
D．basic
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