患者，女，28岁。右前臂圆形肿物如指头大小，质硬，表面光滑，边缘清楚，无粘连，活动度

资本主义经济危机的根源是（   ）

A．社会生产和社会需求之间的矛盾

B．无产阶级和资产阶级之间的对抗

C．生产社会化和资本主义私有制之间的矛盾

D．生产的无政府状态

乳腺囊性增生病的主要处理措施是（）

A.服药

B.手术

C.定期复查

D.激素治疗

E.理疗

某综合实践活动小组到自来水厂进行参观，了解到源水中含Ca²⁺、Mg²⁺、HCO₃^-、Cl^-等，其处理成自来水的工艺流程示意图如下：

请回答：

（1）向源水中加入CaO后生成Ca（OH）₂，进而发生若干复分解反应，其中碳酸氢钙与过量的氢氧化钙反应的离子方程式为______．

（2）加入混凝剂可以除去其中的悬浮固体颗粒，其过程是______（填序号）．

①只有化学过程，无物理过程②只有物理过程，无化学过程③既有化学过程，又有物理过程．FeSO₄•7H₂O是常用的混凝剂，加入后，最终生成红褐色胶状沉淀，则这种红褐色胶状沉淀是______（写化学式）．

（3）通入二氧化碳的目的是______和______．

（4）Cl₂与水发生反应的化学方程式为______，该反应产物中具有杀菌消毒作用的物质是______（填名称）．

（5）下列物质中，可以作为Cl₂的替代品的是______（填序号）．①ClO₂，②浓氨水，③SO₂，④浓硫酸．

在业主建设项目管理机构中，信息管理部门的任务包括______。

A．建立建设项目的信息编码体系及信息管理制度

B．建立项目会议制度，管理有关会议记录

C．参与竣工质量检查，审核竣工验收文件

D．组织编制信息管理工作手册

E．组织编制、整理施工工程技术资料

Britain’s emissions of greenhouse gases, blamed by many scientists for contributing to global warming, have fallen by 14 percent since 1990, according to the latest government report.

British lakes and rivers are also on the road to recovery from acid rain poisoning, following successful curbs to air pollution from cars and heavy industry.

The report by the National Atmospheric Emissions Inventory (NAEI) attributed the drop in greenhouse gas emissions to several factors including: the introduction of catalytic converters on cars, a move toward low sulphur and lead-free petrol and a switch to gas from coal and oil in power generation.

Environment Minister Michael Meacher said the downward trend was welcome, but warned of complacency.

"Even though these figures are encouraging, we must not be complacent. There are still significant problems where we need to do more, for example, to further reduce greenhouse gases and harmful pollutants (污染物) such as ammonia and particulate matter, " he said in a statement.

The government has a target to cut greenhouse gases by 23 percent by 2010 on 1990 level, This is almost double the target of 12. 5 percent to which the UK is committed under the Kyoto Protocol and there are signs that emissions are rising as generators return to using coal-fired power stations in the face of rising natural gas prices.

The Department of Environment Food and Rural Affairs (DEFRA) said substantial curbs on sulphur dioxide emissions across the UK and Europe had cut acid rain by half over the last 12 years. "Damaged freshwater lakes and streams are showing signs of recovery, " it said.

But DEFRA warned of a new threat: "Nitrogen oxides and ammonia are the main air pollutants that must be tackled to stop future damage. "

The bulk of Britain’s ammonia emissions come from farm animal manure (粪肥), causing over-enrichment of land and waterways, said the report. Certain species rampage unchecked through this ultra-fertile environment, smothering the slower growing plants beneath them and choking streams and rivers. Nitrogen oxides enter the atmosphere from car exhausts and industry, creating health-damaging ozone and contributing to acid rain.

According to the passage, Britain has achieved success in all of the following EXCEPT （）。

A. reducing emissions of greenhouse gases

B. recovering lakes and rivers from pollution

C. preventing acid rain from falling

D. curbing air pollution from cars and heavy industry