Unfortunately, few of us have much experience dealing with the threat of terrorism, so it's been difficult to get facts about how we should respond. (06.12 Passage 1)
　　主干：...few...have much experience..., so it's been difficult to get...
　　1. so是個并列連詞，連接兩個分句，表示因果關系。
　　2. 前一個分句的謂語用了have experience doing...句型，表示“有做......的經驗”。
　　3. 后一個分句用了“it is+形容詞+不定式”句型，it是形式主語，真正的主語是不定式to get facts...;句末的about...是介詞短語作定語修飾facts，about的賓語是個how引導的名詞性從句。
　　譯文：不幸的是，我們中很少有人對付恐怖主義威脅的經理，因此很難得到我們應該如何應對恐怖威脅的事實。