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.
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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.
In paragraph 3, which of the following is NOT given as a reason for a reduction in death rates？
A. New inventions.
Better hygiene.
C. Improved food production.
D. Better control of fatal diseases.
The author seems to believe that status syndrome may be cured
A. if the measures can actually weaken the relationship between social position and health.
B. if the government shouts louder in their campaign against diseases resulting from unhealthy habits.
C. if the government helps people find a stronger will power to give up their unhealthy habits.
D. ff the government undertakes bigger and more effective ad campaigns against poor education.
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