赞题库-背景图

单项选择题

Nerve signals may travel through nerve or muscle fibers at speeds as high as two hundred miles per hour.

A．velocities
B．impulses
C．ratios
D．atrocities

<上一题目录下一题>

热门试题

单项选择题When she was invited to the party, shereadilyaccepted.

A．willingly
B．suddenly
C．firmly
D．quickly

单项选择题Below 600 feet ocean waters range fromdimlylit to completely dark.

A．inadequately
B．hardly
C．faintly
D．sufficiently