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
The reforms that Horace Mann achieved were ______.
A．not very radical for the time
B．used only by the state of Massachusetts
C．enforced by the Massachusetts bar
D．later adopted as a model for the nation's educational system
单项选择题
With which of the following statements would the author most probably agree
A．Horace Mann's influence on American education was very great.
B．Horace Mann exerted a small but important influence on American education.
C．Few educators fully understood Horace Mann's influence on American education.
D．The influence on American education by Horace Mann was not appreciate
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