下列句子中的“故”字，与例句中的“故”字意义相同的一项是( )
例：未得国能，又失其故行矣。
A：故善吾生者，乃所以善吾死也。
B：今子不去，将忘子之故，失子之业。
C：苟以天下之大，而从六国破亡之故事。
D：故遣将守关者，备他盗之出入与非常也。
为一本字典编上页码需要用5041个数字，问这本字典总共有多少页﹖
A. You're welcome.
B. What shape would you like?
C. I'd like some cherries, too.
D. What kind of pudding would you like?
E. Yes. I want to buy a pudding.
A: Can I help you?
B:____
A:____
B: I'd like a chocolate pudding.
B: I'd like a heart-shaped pudding.
A: Anything else?
B:____How much are they?
A: 70 yuan.
B: Here is the money.
A: Thank you.
若代数式xx-1有意义，则实数x的取值范围是____．
已知函数f（x）是定义在R上的偶函数，且当x∈（0，+∞）时，f（x）=cosx+x，若实数a满足f（log2a）+f（log12a）≤2f（1），则a的取值范围是____
