题目内容

红红、丹丹、阳阳、珍珍和慧慧是同一家公司的同事，因工作的需要，她们不能同时出席公司举办的新产品发布会。她们的出席情况是：(1)只有红红出席，丹丹、阳阳和珍珍才都出席；(2)红红不能出席；(3)如果丹丹不出席，阳阳也不出席；(4)如果阳阳不出席，慧慧也不出席；(5)已经决定慧慧出席发布会。根据上述情况，可以推出？A.丹丹出席发布会，阳阳和珍珍不出席发布会B.珍珍出席发布会，丹丹和阳阳不出席发布会C.阳阳和珍珍出席发布会，丹丹不出席发布会D.丹丹和阳阳出席发布会，珍珍不出席发布会

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版头或发文机关标识、发文字号、标题、正文、成文时间是公文格式指定项目。()

A. ever B. never C. always D. once

A. ever
B. never
C. always
D. once

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[A] At 8:30 a.m.
[B] At exactly 9:30 a.m.
[C] After 9:30 a.m.