单项选择题

When a typist gets tired, ______.

A．she has to try hard to raise her automatic
B．she can type only automatically
C．she cannot think about what she is doing
D．she can seldom type automatically

<上一题目录下一题>

热门试题

单项选择题

According to the author, a key factor in the ability to reason is ______.

A．the subject's knowledge of grammar
B．the amount of sleep the subject has had
C．the level of arousal of the subject
D．the extent to which the subject has been taught to mason

单项选择题

The author's knowledge of Tibet is probably ______.

A．based on firsthand experience
B．the result of lifelong studies
C．derived from books only
D．limited to geological history