题目内容
If you receive a written invitation to an event that says RSVP","RSVP" means________.
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If you have been invited for a meal._______,________, or a small gift are all appropriate. A ________ note or telephone call after the visit is also considered polite.
When inviting guests for dinner in Britain, the hostor hostess may serve the food in several ways such as ________ style, ________style and ________ style.
In Britain, it is wise to telephone before visiting someone at home. The statement above is(true/ false).
F-H实验中，用于消除热电子在阴极附近的堆积，以提高阴极热发射效率的是（）
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