水泥浆液可以渗入中、细、粗砂中。( )

数轴是一个非常重要的数学工具，通过它把数和数轴上的点建立起对应关系，揭示了数与点之间的内在联系，它是“数形结合”的基础．请利用数轴回答下列问题：

（1）如果点A表示数﹣2，将点A向右移动5个单位长度到达点B，那么点B表示的数是      ，A、B两点间的距离是      ；

（2）如果点A表示数5，将点A先向左移动4个单位长度，再向右移动7个单位长度到达点B，那么点B表示的数是      ，A、B两点间的距离是      ；

（3）一般的，如果点A表示的数为a，将点A先向左移动b个单位长度，再向右移动c个单位长度到达点B，那么点B表示的数是              ．

设置用户权限后，用户不能进行没有权限的操作，但可以查看没有权限的数据。

E

“You will remember this night forever,” he told me. My friend was taking me dumpster(垃圾桶)diving for the first time. We both needed costumes for a party so he decided to show me around a few of the city’s finest waste baskets. After finding costume materials in the thrift store(旧货店)dumpsters, we stopped at a grocery store. There we found a dumpster half filled with potatoes and bread. We collected bags of potatoes to share with friends and to use for cooking with Food Not Bombs(a group that shares free vegetarian food and speaks against war and poverty). I was later told that using the dumpsters could earn me the title of an urban pirate(海盗)-what a great honour!  

My first dumpster dive opened new doors for me. I had struggled with spending money. Now I think it will prove difficult to buy anything after seeing what people throw away. Something about all those wasted resources is not right. It seems we are constantly buying more and more and throwing away perfectly usable items, while many cannot meet their basic needs.

People who have never done their shopping in a dumpster believe it is dirty, dangerous, and humiliating. In reality, a diver with an old pair of jeans, a flashlight and a little common sense (wear boots and gloves to guard against sharp objects)should not have any trouble staying safe and can feel good about being a resourceful and responsible consumer. Dumpstering is a good way to save money, labour, and lessen our environmental impact.

From that dumpster tour, I had a new opinion on garbage. I found I can do something in this wasteful society. By living simply and taking what little I need from others’ unwanted goods, I am able to begin to break the habits of wastefulness. The influence of that first urban pirate adventure created a continuing impact on my life.

72. What is the attitude of the author to the title of an urban pirate?

A. Tolerant          B. Proud         C. Respectful        D. Humiliating

73. “My first dumpster dive opened new doors for me.” means          .

A. it has led to a better life for me and made me wealthier

B. it has made me buy nothing later and break the habits of wastefulness

C. it has changed my views and attitudes to consumers and living

D. it has brought me good senses to be a responsible and a resourceful consumer

74. The main idea of the third paragraph is             .

A. only the poor goes in for dumpstering

B. how to keep safe while dumpstering

C. the benefit and value of dumpstering  

D. how to save money and lessen environmental impace

75. In the writer’s opinion,          .

A. there are many objects to be recycled in the dumpster

B. there are too many people looking down upon the divers

C. the little of an urban pirate is a prejudice

D. the influence of the first urban pirate adventure had an ill effect on his life  

根据材料和图，结合所学知识，回答下列问题。

材料一：改革开放初期，广东经济高速发展。20世纪90年代中后期，经济发展的惯性让广东经济保持了一定的增长速度，并将经济总量牢牢地稳定在全国第一的位置。现在，优势弱化，竞争压力加大，新的经济动力又不够强大，速度落在了长三角之后。领跑了中国经济20多年的珠三角，现在正受到挑战。

材料二：长三角扼据长江入海口，以上海为中心，南京和杭州为两翼，区域内经济发达。人口城市密集，高校众多，是我国最大的都市圈。目前长三角地区以占全国1％的土地和6％的人口，创造了占18％的国内生产总值，在去年的财政收入中，长三角地区的贡献份额超过了四分之一。

材料三：2009年12月3日国务院已正式批复《黄河三角洲高效生态经济区发展规划》。黄河三角洲的发展方向是定位为“高效生态经济区”。黄河三角洲高效生态经济区范围将包括山东省的东营市、滨州市全部及潍坊市、德州市、淄博市、烟台市部分地区，共19个县（市、区），陆地面积2．65万平方公里，约占山东全省面积的六分之一，总人口约985万人。黄河三角洲土地资源优势突出，地理区位条件优势，自然资源较为丰富，生态系统独具特色，产业发展基础较好，具有发展高效生态经济的良好条件。

材料四：三大三角洲的示意图

（1）近年来，由于入海泥沙减少，黄河三角洲增长速度明显减缓。请简要分析黄河入海泥沙减少的原因及黄河三角洲国土整治的主要任务有哪些？

_________________________________________________________________________________

（2）简要分析三大三角洲气候特征的共同点及其对农业生产的影响。

_________________________________________________________________________________

肝硬化患者血清免疫学检查，发现IgM显著增高，血清抗线粒体抗体强阳性，最可能的诊断是（）

A.原发性胆汁性肝硬化

B.病毒性肝炎后肝硬化

C.酒精性肝硬化

D.血吸虫性肝硬化

E.自身免疫性肝炎后肝硬化