肝胆湿热可见 A．尿频尿急， * * 灼痛，尿黄短少 B．头痛目赤，急躁易怒，胁痛便秘 C

从扩展名来看，以下文件属于音乐文件类型的是（）。

A．gif

B．mp3

C．bmp

D．txt

2013年某房地产开发企业以拍卖方式取得土地进行写字楼的开发，支付土地出让金3000万元；写字楼开发成本2800万元，其中含公共配套设施费用500万元；房地产开发费用中的利息支出为300万元（能够按转让房地产项目计算分摊并提供金融机构证明）；当年写字楼全部销售完毕，取得销售收入共计9000万元；缴纳营业税、城市维护建设税和教育费附加495万元；缴纳印花税4.5万元。已知：该企业所在省人民政府规定的房地产开发费用的计算扣除比例为5%。要求：根据以上资料，分析回答下列小题。

该企业计算土地增值税时准予扣除的项目金额为（）万元。

A.6885

B.6889.5

C.8045

D.8049.5

读写任务。

阅读下面的短文，然后按照要求写一篇150词左右的英语短文。

     Scientists find that hard-working people live longer than average men and women. Career women are

healthier than housewives. Evidence shows that the jobless are in poorer health than the job-holders. A study

shows that whenever the employment rate increases by 1%, the death rate increase correspondingly (相应地)

by 2%. All this comes down to one point: work is helpful to health. 

     Why is work good for health? It is because work keeps people busy, away from loneliness. Researches

show that people feel unhappy, worried and lonely when they have nothing to do. Instead, the happiest are

those who are busy. Work serves as a bridge between man and reality. By work, people come into contact

with each other. By collective activities, they find friendship and warmth. This is helpful to health. The loss

of work means the loss of everything. It affects man spiritually and makes him likely to disease. Besides,

work gives one a sense of fulfillment and a sense of achievement. Work makes one feel his value and status

in society. When a writer finishes his writing or teacher sees his students grow, they are happy beyond words.

 [写作内容]

1）以约30个词概括短文的要点；

2）然后以约120个词就“努力学习，快乐生活”的主题发表看法，并包括如下要点：

a）你赞同“努力学习也可以快乐生活”这一观点吗？为什么？

b）举例说明你的同学是如何努力学习并保持健康乐观的心态的？

c）简述如何才能做到努力学习并快乐生活？

[写作要求]

（1）可以使用实例或其它论述方法支持你的论点，也可以参照阅读材料的内容，但不得直接引用原文

         中的句子；

（2）标题自定。

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路由信息协议RIPv2是一种基于（）的应用层协议。

A．TCP

B．UDP

C．IP

D．ICMP

一体化PLC和模块化PLC各有什么特点？