回首过往,我学到了一些经验教训。() A: Lookback,llearnsomelesson. B: Lookingback,llearnsomelessons. C: Lookedback,Ilearnedsomelesson. D: Lookingback,Ilearnedsomelessons.

Email is excellent for _______-keeping. It will always be in your inbox (收件箱) untilyou move or delete (删除) it. You don't have to write anything down and can lookback on it at any time, which improves _______.

A floating<br/>lookback call option pays off which of the following ( ) A: The amount by<br/>which the final stock price exceeds the minimum stock price B: The amount by<br/>which the maximum stock price exceeds the final stock price C: The amount by<br/>which the strike price exceeds the minimum stock price D: The amount by<br/>which the maximum stock price exceeds the strike price