建设工程节约投资的可能性在( )阶段最大。A．设计B．施工C．决策D．招标

在下面的括号里填上适当的字，将成语补充完整。然后以所填的字为谜面，再猜一条成语。1．（　）袖清风    2．（　）花怒放    3．（　）行下效    4．正中（　）怀

5．（　）能可贵    6．（　）地生风    7．风平浪（　）

谜面：_____________________________

谜底：_____________________________

在公差不为0的等差数列{a_n}中，a₄=10，且a₃，a₆，a₁₀成等比数列．

（Ⅰ）求a_n的通项公式；

（Ⅱ）设bn=2an(n∈N*)，求数列{b_n}的前n项和公式．

情景对话。

A: Hi I am Wang Hong. I am a journalist from Taiyuan TV Station. I want to know something about

    your school life. Could you 1______ about it?

B: Yes, I'd love to. 

A: Well, 2______

B: About two thousand students in our school. 

A: And are you always busy with your lessons?

B: 3______ We have much homework to do every day. We have to work hard. 

A: What about your free time?

B: We can take part in different kinds of activities. 4______ in our school. And these hobby groups

    are open to us on Friday afternoons.

A: I think your school is wonderful, isn't it?

B: I think so.

A: It's nice talking to you. 5______

B: You're welcome.

短信国际互通及国际漫游业务的资费如何？

《中国药典》2010年版规定，硬胶囊剂的崩解时限是（）

A.10分钟

B.20分钟

C.30分钟

D.45分钟

E.60分钟