填空题

  • A. Study of Sound
  • B. Highway Police
  • C. Working Principles
  • D. Early Use of" Radar"
  • E. Useful Tools
  • F. Discovery by Chance

Paragraph 5 ______.

【参考答案】

B
<上一题 目录 下一题>
热门 试题

单项选择题
What is the restriction on using this Security Essentials software
A．Three-month trials.
B．To install on a "genuine" Windows P
C． Users’ Windows system.
D．Users’ computer literacy.
单项选择题
A．SuddenlyB．AbruptlyC．ContrarilyD．But
A．Suddenly
B．Abruptly
C．Contrarily
D．But
相关试题