函数f(x)=x3+bx2+cx+d在区间[1,2]上是减函数,则b+c的最大值为( )。
根据首字母,在下面对话的空白处填入适当的单词,使对话的意思完整、通顺,每空填写一词。
A: Hi, Mons! I'm going to have a birthday p 1 . I want to have
it on Saturday e 2 . Can you come?
B: Oh, I'm going to v 3 my grandfather on Saturday.
A: What about S 4 ?
B: I have to l 5 something.
A: Oh, no. When are you f 6 then?
B: Well, Friday is fine.
A: Friday? That's tomorrow! OK, we can have it then. Can you ask Ali to j 7 us?
B: Sure. When and where shall we m 8 ?
A: Near our school gate at half p 9 four.
B: Great! S 10 you then!
A: Bye!
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中华人民共和国国歌是(),田汉作词,聂耳作曲。