5. Would you tell me the difference so that I can make a choice?
你能告訴我有什么不同，以便我做出選擇嗎？
還能這樣說：
In order to choose the right thing, please tell the distinctions among them.
I would like to know the difference so that I can make a choice.
應用解析：
a great choice of 大量供選擇的物品等；
at one's own choice 隨意挑選，自由選擇；
choice of the end covers choice of the means. 只問目的，不問手段

6. Do you mean the life insurance is against accidents?
你的意思是人壽險是預防事故發生的嗎？
還能這樣說：
Is the life insurance against accident?
Can I avoid accidents if I accept the life insurance?
諺語：
Life is not all beer and skittles.
人生非只吃喝玩樂。

7. Generally speaking, aviation insurance is much cheaper than marine insurance.
空運保險一般要比海運保險便宜。
還能這樣說：
On the average, marine insurance is more expensive than aviation insurance.
As a general rule, aviation insurance is cheaper compared with marine insurance.
應用解析：
cheap money 貶了值的錢，利息低的借款；
cheap entertainment 低級的娛樂；
cheap emotion 虛偽的感情；
cheap flattery 假意奉承

8. Let me explain why you need fire insurance.
我來解釋一下貴方為什么要保火險。
還能這樣說：
It can be explained why you need fire insurance.
Let me amplify the reason that you need fire insurance.
諺語：
Fire is a good servant but a bad master.
火是一把雙刃劍。