腹部X线平片提示可能存在慢性胰腺炎的征象是（） A.胰腺区多发性小结石和钙化 B.十

一患者胸片发现肺内巨大肿块，内有厚壁偏心空洞，内缘凹凸不平，肺门淋巴结肿大，直径为3cm，最可能的诊断是()

A.肺鳞癌 

B.肺脓疡 

C.干酪性肺结核 

D.肺腺癌 

E.肺转移瘤

阅读理解

     Experts say that agriculture provides fourteen percent of the world's greenhouse gas emissions each

year. The gases released include carbon dioxide, a major cause of global warming.

     Twenty-one nations around the world recently joined forces to better understand and prevent

greenhouse gas emissions from farms. The Global Research Alliance on Agricultural Greenhouse Gases

was launched at the United Nations conference on climate change. The meeting took place in

Copenhagen, Denmark last month.

     Agricultural experts blame a number of farm activities for producing greenhouse gases. For

example, animal waste and cattle digestive systems release methane(甲烷, 沼气)gas. Fertilized soil

and the burning of crop waste also release harmful gases into the air. Experts say some methods of

farming-turning the soil to prepare for planting-also release harmful carbon dioxide.

     An official of the European Commission's Directorate General for Research says agricultural

greenhouse gas emissions can be cut. Maive Rute suggests feeding animals a diet designed to reduce

emissions.

     The new agricultural research group says protecting against global warming is only part of its

purpose. It says the world also needs to develop better farming methods to feed growing populations

in poor countries.

     United States Agriculture Secretary Tom Vilsack said no one single nation can fight agricultural

greenhouse gas emissions and increase food production at the same time. This is why the alliance is

important for combining resources and finding new ones.

     The United States Department of Agriculture will increase spending on farm emissions research by

ninety million dollars over the next four years. The total will reach one hundred and thirty million dollars.

The U. S. D. A. will share the research with other countries in the Global Research Alliance on

Agricultural Greenhouse Gases and support researchers from developing countries that belong to the

alliance. Money from the Borlaug Fellowship Program will let the researchers study agricultural climate

change with American scientists.

     Mister Vilsack said that just as climate change has no borders, there should be no borders for

research.

1. In Paragraph 4, Maive Rute recommends __________.

A. increasing food production

B. changing cattle digestive systems

C. developing better farming methods

D. giving animals the food meant to produce fewer emissions

2. The underlined word "alliance" in Paragraph 6 probably means __________.

A. action or state being joined together

B. an agreement signed between countries

C. a program or project set up for a research

D. an organization formed for different goals

3. How much has the U. S. D. A. spent on farm emissions research so far?

A. 130 million dollars.  

B. 220 million dollars.

C. 40 million dollars.  

D. 90 million dollars.

4. The purpose of the passage is to __________.

A. suggest a total ban on farm activities

B. introduce the Copenhagen conference held last month

C. appeal to more countries to cut agricultural emissions

D. inform readers of the major cause of global warming

第一个系统阐述了介入放射学概念，并形成共识的学者是（）。

A.Margulis

B.Wallace

C.Dotter

D.Forssmann

E.Seldinger

某企业采用账龄分析法计提坏账准备。企业2004年12月31日“坏账准备”科目的贷方金额应为100万元；2005年7月3日，确认坏账损失30万元；2005年11月23日收回 2004年已确认的坏账损失的应收账款50万元；2005年12月31日应收账款账龄及估计坏账损失如表：
单位：万元

应收账款账龄	应收账款金额	估计损失(%)	估计损失金额
未到期	6000	0.5
过期1个月	4000	1
过期2个月	3000	2
过期3个月	2000	3
过期12个月	1000	5
合计	16000	-

要求：
(1)编制2005年7月3日确认坏账损失的会计分录。
(2)编制2005年11月23日收回2004年已确认的坏账损失的应收账款。
(3)计算2005年12月31日“坏账准备”贷方余额。
(4)编制2005年12月31日计提坏账准备的会计分录。

拒绝服务攻击（DOS）是破坏网络或系统服务的一种网络攻击方式，可以停止响应正常用户的网络服务请求。