A people may have a mistaken idea of what you did B B． you should take time to explain yourself C C． people may discuss it with you in depth D D． you need time to understand yourself

A A． to take no notice of the criticism B B． to give up your opinion C C． you need to change your job D D． you've done nothing wrong

A A． often blame her B B． refused to change his opinion C C． made an unreasonable criticism D D． refused to talk to her about the criticism

A A． Bartered goods. B B． Gold． C C． Coin currency. D D． Writing Promission.

A necessary items B B． expensive things C C． difficult things to obtain D D． material objects

A A． represented a great improvement over barter B B． can be easily taken C C． were made of precious metals D D． could be easily got

A A． They promote international trade. B B． They allow very rapid money transfers. C C． They are still limited to small transactions（交易）. D D． They are dependent on good telecommunications systems.

A culture B B． a means C C． life D D． an end

A A． by free education B B． to get a good job C C． to work for society D D． to rid themselves of “low” work

A A． to offer children a good job B B． to prepare children for life C C． to get everyone to live happily D D． to choose a system of education