问题
选择题
How often do you exercise? I exercise _______ / wʌns/ a day.
A．won
B．once
C．win
D．one
答案
答案：B
题目分析：句意：你多长时间锻炼一次？我每天锻炼一次。won音标为：[wʌn]；once音标为：[wʌns]；win音标为：[wɪn]；one音标为：[wʌn]。故选B。
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