判断题

危机的源头是风险。

答案：正确

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煤矿瓦斯涌出量预测，采用分源预测法
正确
错误

答案：正确

单项选择题

你认为下面哪个句子的介词运用是合适的？
A、Since the founding of the People's Republic of China, TCM has played an important role in containing major epidemics, such as the encephalitis B epidemic in 1956, the SARS outbreak in 2003, and the H7N9 bird flu in 2009.
B、TCM continued to play an important role in containing major epidemics following the foundation of the People's Republic of China, such as the 1956 encephalitis B epidemic, the 2003 SARS outbreak, and the 2009 H7N9 bird flu crisis.
C、都很合适
D、都不合适