材料一　2015年初，我市遭遇了严重的雾霾天气，整个城区的天空灰暗、阴沉，人们的身体健康受到影响，高速公路连续封闭，给人们的生活、工作和出行带来极大不便。

　材料二　2015年，宜宾市政府将着力实施城市森林宜居工程、百镇千村森林福祉工程、三江九河森林防护工程和绿色通道森林景观工程，通过四大工程着力推进森林城市生态体系建设，打造充满活力、富有魅力的蜀南森林城。

关于蓝藻的说法，不正确的是（）

某几何体的三种视图分别如下图所示，那么这个几何体可能是（  ）.

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　  Do you carry too much on the way to school or home? Don’t worry．Try e-readers (电子阅读器) and say goodbye to your heavy schoolbag．
   An e-reader has the memory space to hold hundreds of books．So people want to (A)扔掉沉书包 and read with small, light e-readers．For example，Cushing Academy，a high school in Massachusetts，USA，replaced (替换) most of the 20，000 books in (B) its library last summer．Teachers and students will use e-readers instead．
   Most e-readers are thin and weigh less than 500g．They can download (下载) an e-book in 60 seconds．“It’s (C) so easy．You can have a lot of books right at your fingers!” said Meghan Chensusky．
   Chinese schoolchildren are also trying e-readers．At the Shanghai World Expo (世博会)，an e-schoolbag is now on show．It is a special e-reader．Students can use it to download textbooks from the school servers (服务器)．(D)It can also send and receive homework．Some Schools in Beijing and Shanghai have tried this e-schoolbag for a few years．“It’s excellent．I (E)don’t have to carry a heaw schoolbag anymore，”said Xiao Qi，15，Beijing．
   New e-readers are not just for reading．They have Wi-Fi and multimedia (无线电视和多媒体)．Parents worry that these may hurt their children’s study habits． “I think Wi-Fi is not necessary for kids，”said Zeng Wenwen，43， Beijing．