A．None，one or two working copies of UGT28 17 call be found in different people．   
B．Test results would depend on numbers of working copies of UGT2B17．
C．Most Caucasians have no functional copies of UGT2B17．   
D．Most Asians have no functional copies of UGT2B17．

A．Because it is required by the Beijing Olympic Games Committee．
B．Because it may defend them against unfavorable testosterone test results．   
C．Because it is one of the ways to show“spirit of Olympianism”．
D．Because it will help them to perform better in the Olympic Games．

单选题回答题：


According to tlle passage,   

A．many people don’t ask for much about their dream job．   
B．most Americans fire not satisfied with their jobs．
C．Lod Miller is totally satisfied with her current job．
D．Lori Miller is not satisfied with her current job at all．