Which of the following might be the best title for the passage？
A. Left-handedness in Traditional Society
B. Left-handedness VS Right-handedness
C. Left-handedness and Violence
D. The advantage of Left-handedness in Boxing
The two doctors might support which of the following statements？
A. Left-handers stand a better chance of winning than right-handers in violence.
B. Left-handers are more likely to commit crimes than the right-handers.
C. Left-handers are directly responsible for the violence in traditional societies.
D. There is no evidence that left-handers are more violent than right-handers.
数组Q[0..n-1]作为一个环形队列，f为当前队头元素的前一位置，r为队尾元素的位置，假定队列中元素的个数总小于n，队列中元素的个数是()。
A. r-f
B. n+f-r
C. n+r-f
D. (n+r-f)modn
But eighty or even ninety...normal life-span for humans(paragraph 3) is closet in meaning to
A. on average, people now live to be over eighty.
B. we should recognize that people now live to between eighty and ninety on average.
C. nowadays it isn't normal for people to die younger than eighty.
D. average life expectancy is increasingly being considered to be eighty or more.
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