经济学人下载:美国大选如何影响股市(2)

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Many African American families attended the inauguration of the country's first black president. 

很多非洲裔美国家庭参加了美国第一位黑人总统的就职典礼。

2.opt to 选择

Some boards opt to hand it over to a risk committee.

一些董事会选择将这一问题交给某个风险委员会来处理。