单项选择题

Questions 19 to 22 are based on the conversation you have just heard.

A．TV.
B．Radio.
C．Telephone.
D．Doorbell.
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问答题
1．能源短缺问题已经非常严重； 2．可以采取节能措解决能源短缺问题； 3．你的看法。
单项选择题
A．At the age of 10.B．At the age of 22.C．When he was known as a singing cook.D．After he found a job in New York.
A．At the age of 10.
B．At the age of 22.
C．When he was known as a singing cook.
D．After he found a job in New York.
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