单项选择题
您的浏览器不支持 audio 元素。
A.Print materials for visitors.
B.Study referential reports.
C.Ask Sally to make arrangements.
D.Apply to the chief executive.
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单项选择题
A.The person who is addicted to the Internet.B.The person who reads every label of the goods.C.The person who wants to buy fruit.D.The person who is not picky.
A.The person who is addicted to the Internet.
B.The person who reads every label of the goods.
C.The person who wants to buy fruit.
D.The person who is not picky.
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单项选择题
A.Those with frequencies lower than 20 hertz.B.Those with frequencies about 21,000 hertz.C.Those with frequencies lower than 20,000 hertz.D.Those with frequencies higher than 20,000 hertz.
A.Those with frequencies lower than 20 hertz.
B.Those with frequencies about 21,000 hertz.
C.Those with frequencies lower than 20,000 hertz.
D.Those with frequencies higher than 20,000 hertz.
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