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．rates
B．impacts
C．ratios
D．pulses
<上一题 目录 下一题>
热门 试题

单项选择题
The architecture is harmonious and no building is over six-storey high.
A．old-fashioned

B．traditional
C．conventional

D．balanced
单项选择题
A new system of quality control was brought in to overcome the defects in the firm's products.()

A. invested
B. introduced
C. installed
D. insisted
相关试题