OG中2个句子句法读不懂， 请教大家

naoyixue

OG中2个句子句法读不懂， 请教大家
2个句子，不懂（具体如下）
1"recent years have  brougt minority-owned businesses in the United States unprecedented opportunities- as well as new and significant risks.
(请问， 这个句子主语是萨，没有找到）
2" record their efforts to do so
(请问， 这个so是指代“record their efforts")

termaze

感觉你的两个句子都是从文中抽出的，得联系上下文才能说得清楚。

huangyouhuifei

试翻译：
1、最近几年给美国的少数民族企业带来了空前的机遇，与此同时，也带来了巨大的风险。
2、整句是：Congress, in apparent agreement, has required by law that businesses awarded federal contracts of more than $500,000 do their best to find minority subcontractors and record their efforts to do so on forms filed with the government.
so是指businesses awarded federal contracts of more than $500,000 do their best to find minority subcontractors

供参考～～～

naoyixue

嗯，的确是原文中选的，但是尤其第一句，主语是啥啊？ 找不到？谢谢

huangyouhuifei

我觉得主语是recent years

naoyixue

这个我认为是时间壮语，昨天做题时突然觉得其实不必要作牛角尖语法，关键是文章整个能否理解， 谢谢各位拉（我这样是不是逻辑有点问题啊，哈哈）