A．he was working as a mailman．
B．he helped deliver the Easter baskets．
C．he delivered written messages to the youth．  
D．he helped collect money for the school．

单选题回答题：


Why does the author choose to be“a buy-and-hold investor”?

A．Because his employer prohibits him to trade equities on a short—term basis．
B．Because he believes that long．term return will balance out short—term fluctuation． 
C．Because he is misguided by the loyalty to the idea of“buy and hold．”
D．Because he is an active investor and keeps an eye on stock markets every day·

A．explosive．   
B．transient．   
C．unstable.
D．1ively．