公共英语一级
A．$100．
B．$200．
C．$300．
F：Sure．Here you are，sir．
[B]。本题属于数字计算题，男士的话语是听音重点。考生关键是听清two 50-dollar和ten 10-dollar(bills)这两处，经过简单计算即可知，男士要兑换的钱是200美元。
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