单项选择题

According to the author, the alpha state has been shown to be

A．immeasurable.
B．erratic in its rhythm.
C．a brief burst of activity in the brain.
D．controllable.
<上一题 目录 下一题>
热门 试题

单项选择题
All scientific truth is tentative because
A．evidence is basically a value judgment.
B．evidence is basically an esthetic judgment.
C．evidence is basically a purposeful judgment.
D．evidence is basically a factual judgment.
单项选择题
The word concrete in the second sentence of the passage means
A．general.
B．particular.
C．scientific.
D．verifiable.
相关试题