如图，一个空间几何体的主视图和左视图都是边长为1的正方形，俯视图是一个圆，那么这个几何体的侧面积为（）

题干

A： $\frac{π}{4}$

B： $\frac{5 π}{4}$

C： $π$

D： $\frac{3 π}{2}$

上一题下一题 0.0难度选择题更新时间:2017-03-04 05:55:31

C

假设你是Li Ming, 以下是你的美国笔友Tina发给你的一封电子邮件，请你根据该邮件内容给Tina回一封邮件。

From:	Tina
To:	Li Ming
Subject:	I am coming!
Hi Li Ming, How is everything? I'm very happy that the holidays are coming. I want to go to your hometown to visit you in September. Is this good? What's the weather like in your hometown? And what should I take with me? I know Mid-autumn Festival comes in September, and it is a very important festival for you celebrate it？I'm looking forward to your reply. Best wishes to your parents! Yours, Tina

要求:1）考生需按电子邮件格式来完成整个邮件；

2）邮件中不能出现真实姓名、校名等相关信息；

3）字数90~110。