由于反映活动的形式不同，知识可以分为陈述性知识与( )A．程序性知识 B．实用的知

WeChat (微信)  was put into market in January 21, 2011. Because of its attractive functions(功能),low cost and convenience, it becomes a hot free software. You can see people around you using WeChat to talk with their friends now. They are especially students in high schools and universities. The other users are workers. The age range is from ten to sixty years old. Most people may become WeChat users.

WeChat supports Wi-Fi and 3G network. It can enjoy group chat up to 20 people. What's more, WeChat can search people around you. It also supports to send video. You can share the wonderful pictures with other people at any time. It can share your messages to the world and make new friends. WeChat not only can keep your pictures and texts in a way, but also can help you to catch your messages. WeChat makes two people "talk" with each other in different places and at different time. People believe that there will be many other functions created in the future.

The cost of WeChat is very low. It costs nothing to own WeChat if you have a phone such as Nokia

Motorola, Lenovo. However, it costs web traffic (流量) to send and receive messages. It is enough to spend ten yuan on your web traffic for a month. The low cost is one of the main reasons why WeChat becomes popular.

小题1:WeChat was created after January 21, 2011.

小题2:Most people may become WeChat users except the old people.

小题3:WeChat won't be created with other functions in the future.

小题4:You can use WeChat to talk with twenty people at the same time by smart phone.

小题5:The cost of WeChat is very low, but the web traffic cost is very high.

宽带城域网中，VLAN的划分不包括以下哪种方法？（）

A.基于端口

B.基于MAC地址

C.基于协议

D.基于物理位置

城市轻轨与（）已是各国发展城市公共交通的重要手段之一。

长期应用能抑制胰高血糖素分泌的药物是（）

A．吡格列酮

B．格列本脲

C．二甲双胍

D．阿卡波糖

E．罗格列酮

下列叙述，错误的是

A．牛膝有南牛膝与北牛膝

B．五加皮有南五加与北五加

C．贝母有川贝母与浙贝母

D．葶苈子有南葶苈子与北葶苈子

E．五味子有南五味与北五味