设备管理的社会化、专业化、网络化的实质是建立设备维修（）。A.信息平台 B.技术平台

女性，47岁，初中文化，由丈夫和弟弟陪来。自我陈述：我是在半年前退休的，刚开始还好。后来就觉得无聊，很烦躁。想打电话给丈夫又怕影响他工作，儿子在大学读研究生也很忙。晚上睡不着，有时只睡1~2个小时。心情也越来越差，做事没精力，对什么事都没兴趣。每天早上丈夫出门的时候，就开始担心这一天该怎么过，他下班后会好些。记性也越来越差，连做菜都会忘放调料。我越想越觉得自己没用，再这样下去会害了丈夫和儿子的，所以我就想死了算了（哭泣）。了解资料：丈夫反映：我妻子初中毕业后就进工厂了，一向工作兢兢业业，是劳动模范。半年前退休后在家，刚开始很好的，很勤快地做家务。但2个月前我发现她好像有心事，整天闷闷不乐，做事没有精神，说话反应慢。晚上睡觉时老翻来翻去睡不好，我看她精神不好就劝她去看看医生。大概一个半月前我带她去看内科，医生说她是"更年期综合征失眠"，配了些安定，吃了药后睡眠好了些，看上去精神也好了些。但近一个月来我看她越来越瘦，吃饭没胃口，还说胸口被东西堵牢了，吃不下，人也瘦了好几斤。每天除了做饭就在床上躺着，也不看电视。这2~3天特别厉害，我下班后发现她连饭也不做了，还说活着没意思。我想可能是她一个人在家太寂寞了，打算陪她出去散散心。今天早上我回来拿忘记带的东西，发现她正在系绳子要上吊，说她不想活了，我就带她来了。其他资料：求助者病前工作认真，做事力求完美，能力好，是劳动模范。性格偏内向，人际关系好。咨询过程：求助者以前没有情绪低落或高涨持续存在现象。病前人际关系良好。月经正常，性生活明显减少有2个月。谈话过程求助者低头，表情忧伤，有时还哭泣。没有抱怨别人，但是对自己很自责，让丈夫洗碗感到很不应该。在鼓励下交谈仍然被动，回答问题时反应慢。在掌握基本资料后，对求助者进行了解释，指出是由于她的情感障碍才出现其他的症状。求助者最后表示自己希望能够得到治疗。

求助者自我陈述中出现的症状有（）。

A.情绪低落

B.失眠

C.兴趣丧失

D.被害妄想

东方小学六年级共三个班，每班48人．六（1）班订阅《小学生数学报》的人数与六（2）班不订阅《小学生数学报》的人数同样多，六（3）班有 1 4 的同学订阅了这份报纸．三个班订阅《小学生数学报》的共有多少人？

如果企业凭报关单办理付款，我们应先审查：（）

A.报关单

B.合同、发票

C.在进口付汇名录

D.电子口岸IC卡

社会总体消费水平的高低与人们收入差距的大小没有联系。（）

A Thirsty Planet

If you live in a city in North America or Europe, you have probably never thought much about water. Whenever you need some, you turn on the tap and there it is. Millions of people in other parts of the world are not so lucky. They have trouble getting enough clean water for their basic needs. This situation may soon become common all around the world, scientists believe. In fact, they say that the tack of clean water may be one of the biggest issues in the twenty-first century.
The reasons for this are clear. On the one hand, people are using more water than ever before. Over the last fifty years, the population of the world has more than doubled. So has the demand for water — for home use, for farming and for industry. On the other hand, supplies of clean water are disappearing. Many sources of surface water — such as rivers, lakes and streams — are too polluted and unhealthy for use as drinking water. This has forced more and more people to drill wells so they can get water from underground.
There are enormous amounts of water deep underground in lakes called aquifers. Until recently, scientists believed this groundwater was safe from pollution. Then, in 1980s, people in the Untied States began to find chemicals in their well water, and scientists took a closer look at what was happening. Weldon Spring, Missouri, for example, was the site of a bomb factory during World War Ⅱ. The factory was destroyed after the war, but poisonous chemicals remained on the ground. Very slowly, theses chemicals dripped down through the ground and into the aquifer. Once they did, however, the water from that aquifer was no longer drinkable.
It probably never will be drinkable again. Groundwater is not renewed regularly by the rain, like lake or river water. Thus, if a harmful chemical gets into an aquifer, it will stay there for a very long time. Furthermore, it is nearly impossible to remove all the water in an aquifer and clean out the pollutants.
Industrial sites like Weldon Spring are one cause of groundwater pollution. There are thousands of such sites in the Untied States alone, and many others around the world. Groundwater pollution is also caused by modem farming methods, which require the use of large amounts of chemicals in the fields. And finally, yet another important cause of groundwater pollution is waste. That includes solid waste thrown away in dumps and landfills, and also untreated human and animal waste.
The situation is indeed very serious. Fortunately, there are many aquifers and they are very large. Only a small number have been seriously damaged so far. But if the world does not want to go thirsty in the near future, further pollution must be prevented. Around the world, governments must make real changes in industry, agriculture and waste disposal.

This passage is mainly about ______.
A. pollution problems
B. water supplies around the world
C. an industrial site in Missouri
D. groundwater pollution