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名词解释：B2C交易

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Do you know ________？

A. what time does he have lunch
B. what time he has lunch
C. what time will he have lunch
D. what time has he had lunch

Do you know the_______ （第三） Sunday of June is Father's Day？

利用计算器专用按键和固定程序进行坐标正算的方法和步骤是：在“DEG”状态下，先输入d，后输入°（应把°′″变成°），结果先得y后得x（）

English_________ in many countries.

A. speak
B. speaks
C. spoke
D. is spoken