The phrase "a leg up" in Paragraph 2 probably means ______.
A. an instinct
B. an advantage
C. a fight
D. a chance
查看答案
【C3】
A. stable
B. present
C. fixed
D. favorable
【C9】
A. drive
B. reduce
C. return
D. assign
What does "girth" possibly mean？
A. Measurement around an object.
B. Measurement of object weight.
C. Formula to calculate object width.
D. Formula to calculate object length.
What does the author think of the password？
A. It is an old system that needs improvement.
B. It provides as much security as before.
C. It should be abandoned by computer users.
D. It has developed to an advanced stage.
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