下列哪项是人类免疫缺陷病毒（HIV）在人体内作用的靶细胞（）。 A.CD4+T淋巴细

根据所给图片，完成下面对话。

Tom: Who's your math teacher?

Sarah: Mr Zhao.

Tom: What's he like?

Sarah: 1______________________________

Tom: Who's your English teacher?

Sarah: Miss Sun.

Tom: Is she young?

Sarah: 2______________________________

Tom: 3______________________________

Sarah: No, she's active.

Tom: Who's your Chinese teacher?

Sarah: Mr Liu.

Tom: Is he strict?

Sarah: 4______________________________ 

         But he's very 5______________________________.

—Boy, 　　　　　　

　—It is, looks like spring is coming soon.

　—Yeh, It'll just be a few more weeks.

A．it's really a nice day today, isn't it?

B．what knid of weather are we going to have today?

C．do you think it is going to rain today?

D．what' it like outside today?

外铄论者一般不重视教育的价值。

人工喂养儿肠道的主要细菌（）。

A.链球菌

B.大肠杆菌

C.金黄色葡萄球菌

D.变形杆菌

E.白色念珠菌

下面关于OSPF协议，哪个描述是错误的？（）

A.ROUTER-LSA用于描述路由器的本地链路状态信息

B.NETWORK-LSA用于描述广播类型网段和NBMA网段的链路状态信息

C.虚链接是属于谷关区域的一条虚拟链路

D.第四类LSA用于描述如何达到ASBR，并且包含路由和拓扑信息