题目内容：
根据短文内容，回答题。Being a salesman，the most important thing is to understand people．You’ve got to know what they’re thinking．If you can figure that out，you can get them to do a lot．They come in with all idea about what they want．You get them talking about themselves，about what they like．
If it’s a man，you talk about football，or something like that．If it’s a woman，you ask her about fashions．That way they get comfortable with you．You ask them a lot of questions and get them saying yes．Then they just get into the habit of saying yes．
In the end，you can put them into anything you want，if you’re really good．For example，if they need a little car for the city，you send them home a truck．Of course，1 wouldn’t really do that．It wouldn’t be right．You’ve got to sell on this job，but you also have to be fair．It’s not fair to take advantage of people too much．There are some people in this business who’d do anything．
But I don’t believe in that．
To be a good salesman，the most important thing is to__________． A．1earn from different kinds of people
B．understand what people are thinking
C．see what people usually do in daily life
D．watch what changes people have made
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