单项选择题

瑜伽休息术是一种（）、清醒、意念集中状态下的放松方法。 A. 主动 B. 被动 C. 无意识 D. 自然

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半总统制发端于法国（）时期，于1958年确立。

答案：正确答案：第五共和国

单项选择题

An insurance company believes that people can be divided into two classes: those who are accident prone and those who are not. The company's statistics show that an accident-prone person will have an accident at some time within a fixed 1-year period with probability 0.3, whereas this probability decreases to 0.1 for a person who is not accident prone. If we assume that 20 percent of the population is accident prone, what is the probability that a new policyholder will have an accident within a year of purchasing a policy?

A．0.14
B．0.12
C．0.10
D．0.16