安装高压熔断器应站在绝缘垫或绝缘台上，并戴护目眼镜和绝缘手套，必要时使用绝缘夹钳。（

关于下图中四个省的叙述，正确的是

A．①省是我国西南的边疆省，它同三个国家接壤

B．②省是我国位置最偏南的省，我国最南端曾母暗沙位于该省

C．③省是我国的湖北省，简称鄂，人民政府驻地在长沙市

D．④省是我国的黑龙江省，它同俄罗斯和蒙古两国为邻

古人云：“民以食为天”．人们一日三餐的主食多为淀粉类食品，如米饭、面包等．食物中的淀粉[（C₆H₁₀O₅）_n]在人体内不能被直接吸收利用，而是在淀粉酶和水的作用下转化为葡萄糖，并溶解在血液里，提供营养和能量

试根据题意回答下列问题：

（1）淀粉　  　（填“属于”或“不属于”）有机高分子化合物

（2）欲检验某食物中是否含有淀粉，下列试剂中最适宜选用的是　 　（填序号）

A．石蕊试剂

B．碳酸钠溶液

C．稀盐酸

D．碘水 E．氢氧化钠溶液（3）葡萄糖由　           　（填元素名称）元素组成；绿色植物通过光合作用可以合成葡萄糖，其反应方程式为　                              　，在此过程中涉及到能量转换形式是　                      　

Acid rain, is a form of air pollution, currently a subject of great controversy because of widespread environmental damage for which it has been blamed. It forms when oxides of sulfur and nitrogen combine with atmospheric moisture to yield sulfuric and nitric acids, which may then be carded long distances from their source before they are deposited by rain. The pollution many also take the form of snow or fog or be precipitated in dry forms. In fact, although the term "acid rain" has been in use for more than a century — it is derived from atmospheric studies that were made in the region of Manchester, England — the more accurate scientific term would be "acid deposition." The dry form of such precipitation is just as damaging as the liquid form, especially to trees and structures. Furthermore, some of the pollutants also associated with acid rain are not themselves acidic. The problem of acid rain may be said to have originated with the Industrial Revolution, and it has been growing ever since. The severity of its effects has long been recognized in local settings, as exemplified by the spells of acid smog in heavily industrialized areas. The wide destructiveness of acid rain, however, has come to be realized only in recent decades. One large area that has been studied extensively is northern Europe, where acid rain has eroded structures, injured crops and forests, and threatened or depleted life in freshwater lakes. In 1983, for example, published reports indicated that 34 percent of the forested areas of West Germany had been damaged by acid rain. The northeastern U.S. and eastern Canada have also been affected by this form of pollution, and other areas of the two countries are also showing increasing signs of damages, as are other regions of the world. Industrial emissions have been blamed as the major cause of acid rain. Because the chemical reactions involved in the production of acid rain in the atmosphere are complex and as yet little understood, industries have tended to challenge such assessments and to stress the need for further studies; and because of the cost of pollution reduction, governments have tended to support this attitude. Studies released by the U.S. government in the early 1980s, however, ply implicated industries as the main source of acid rain.

地球化学勘查

健脾丸中含有的药物是

A．白术、木香、半夏

B．白术、木香、连翘

C．白术、茯苓、连翘

D．白术、木香、黄连

E．白术、茯苓、半夏