一名3岁男童，在幼儿园进食后，出现严重腹痛和便血。同时进食儿童也有数人出现相同的症状

Angela Zou hardly writes text messages now. Sitting at her office desk, Zou asks her iPhone, where they should go to eat. When it buzzes seconds later, she lifts it to her ear for her friend's reply. The conversation goes back and forth through these pieces of words before they decide on the place for lunch.

Like millions of others across Asia, Zou is using WeChat, a smartphone app（应用程序）developed in China, to send voice messages, snapshots（快照）and emoticons（表情符号）to her friends. Now that its walkietalkie-style（对讲机式）messages have become everywhere, she said typing feels like hard work.

WeChat's popularity has grown quickly since it came into use in 2011. Tencent, the company that developed the app, announced in September that its users had doubled in six months to 200 million. Most users are in China, though WeChat is being used across Asia and already has users in the US and the UK.  

Historically, it has proved difficult for Chinese internet firms to develop in foreign countries. But WeChat is becoming the first Chinese social media application with the possibility to go to the whole world.

WeChat is similar to the popular US-based mobile messaging service WhatsApp, but it does more. It comes in eight languages including English, Arabic and Russian.

"I used WhatsApp before I came back to China from studying abroad and found all my friends were using WeChat," said Zou, who is 25. "Now when I want to contact someone I use WeChat first." The app's features include Look Around, which allows users to chat to strangers nearby, while Moments works like Instagram（图片分享）.

小题1:Why does Angela Zou hardly write text messages now?

小题2:What is WeChat used to do?

小题3:Which company of China developed WeChat?

小题4:Where is WeChat used?

小题5:What do you think of WeChat?

打开工作簿文件EXCEL.XLS，将工作表sheet1的A1:E1单元格合并为一个单元格，内容水平居中，计算“合计”列的内容，将工作表命名为“科研经费使用情况表”。

现在，一般观念认为管理信息系统(MIS)是由数据驱动的，而决策支持系统(DSS)则是由______驱动的。

盲人、又聋又哑的人违反治安管理的，可以从轻、减轻或不予处罚，这是( )的体现。

A．尊重 * *

B．保障 * *

C．整个社会对这类人员充满人文关怀

D．处罚相当

某宽厚板车间冷床区为三跨等高厂房，跨度均为35m：边列柱柱间距为10m，中列柱柱间距为20m，局部60m：采用三跨连续式焊接工字形屋面梁，其间距为10m，屋面梁与钢柱为固接。厂房屋面采用彩色压型钢板，屋面坡度为1/20：檩条采用多跨连续式H型钢檩条，其间距为5m：檩条与屋面梁搭接。屋面梁、檩条及屋面上弦水平支撑的局部布置示意如题图中的(a)图所示，且系杆仅与檩条相连。

中列柱柱顶设置有20m和60m跨度的托架，托架与钢柱采用铰接连接，托架的简图和荷载设计值如题图中的(b)和(c)图所示。屋面梁支承在托架竖杆的侧面，且屋面梁的顶面略高于托架顶面约150mm。

檩条、屋面梁、20m跨度托架采用Q235B钢，60m跨度托架采用Q345B钢。手工焊接时，分别采用E43型焊条和E50型焊条，要求焊缝质量等级为二级。

20m跨度托架杆件采用轧制T型钢，T型钢的翼缘板与托架平面相垂直。60m跨度托架杆件采用轧制H型钢，H型钢的腹板与托架平面相垂直。

20m跨度的托架下弦节点如题图所示，托架各杆件与节点板之间采用等强的对接焊缝进行连接，焊缝质量等级为二级。斜腹杆翼缘板拼接板为2-100×12，拼接板与节点板之间采用角焊缝连接，取h_f=6mm，按等强连接的原则，试问，该角焊缝的长度ι₁（mm）与下列（）项数值最为接近。

A．360

B．310

C．260

D．210