生活中的凸透镜所成的像不可能是（） A．倒立、缩小的像 B．倒立、放大的像 C．

When Dr. John W. Gofman, professor of medical physics at the University of California and a leading nuclear critic, speaks of "ecocide" in his adversary view of nuclear technology, he means the following. A large nuclear plant like that in Kalkar, the Netherlands, would produce about 200 pounds of plutonium each year. One pound, released into the atmosphere, could cause 9 billion cases of lung cancer. This waste product must be stored for 500,000 years before it is of no further danger to man. In the anticipated reactor economy, it is estimated that there will be 10,000 tons of this material in Western Europe, of which one table-spoonful of plutonium-239 represents the official maximum permissible body burden for 200,000 people. Rather than being biodegradable, plutonium destroys biological properties.

In 1972 the .U.S. Occupational Safety and Health Administration ruled that the asbestos level in the work place should be lowered to 2 fibers per cubic centimeter of air, but the effective date of the ruling has been delayed until now. The International Federation of Chemical and General Workers’ Unions report that the 2-fiber standard was based primarily on one study of 290 men at a British asbestos factory. But when the workers at the British factory had been reexamined by another physician, 40--70 percent had X-ray evidence of lung abnormalities. According to present medical information at the factory in question, out of a total of 29 deaths thus far, seven were caused by lung cancer. An average European or American worker comes into contact with six million fibers a day. "We are now, in fact, finding cancer deaths within the family of the asbestos worker," states Dr. Irving Selikoff, of the Mount Sinai Medical School in New York.

It is now also clear that vinyl chloride, a gas from which the most widely used plastics are made, causes a fatal cancer of the blood-vessel cells of the liver. However, the history of the research on vinyl chloride is, in some ways, more disturbing than the "Watergate cover- up. " "There has been evidence of potentially serious disease among polyvinyl chloride workers for 25 years that has been incompletely appreciated and inadequately approached by medical scientists and by regulatory authorities," summed up Dr. Selikoff in the New Scientist. At least 17 workers have been killed by vinyl chloride because research over the past 25 years was not followed up. And for over 10 years, workers have been exposed to concentrations of vinyl chloride 10 times the "safe limit" imposed by Dow Chemical Company.

By "ecocide" the author most probably means（）

A. waste utilization

B. ecological balance

C. radioactive reaction

D. massive bio-destruction

在验资业务中，注册会计师可以提出抗辩，并能证明事由成立的情况下，可以不承担民事赔偿责任的免责情形。

下列胃虚型妊娠恶阻的主证中，哪项是错误的（）

A.妊娠以后，恶心呕吐

B.口淡无味

C.呕吐清涎

D.烦渴口苦

E.神疲思睡

患者，女性，71岁。糖尿病史5年。咳嗽、多痰伴发热一周，嗜睡2天，昏迷5小时入院。体检：中度昏迷，皮肤干燥，呼吸24次／分，双肺湿啰音，心率120次／分。

此时应做何种检查能最有助于诊断（）

A.ECG

B.电解质

C.HbAlc（糖化血红蛋白）

D.血脂全套

E.血糖、血酮

打开工作簿文件EXl0．XLS(内容如下)，将A1：E1单元格合并，内容居中。计算“合计”行的内容，将工作表命名为“品牌店销售情况表”。

品牌店销售情况表(万元)
名称	第一季度	第二季度	第三季度	第四季度
品牌店A	28.6	80.9	23.9	63.4
品牌店B	32.4	32.5	64.3	76.3
品牌店C	36.8	65.8	78.2	42.5
合计

　　(2)选取“品牌店销售情况表”的A2：E5单元格的内容建立“数据点折线图”，X轴上的项为季度名称(系列产生在“行”)，标题为“品牌店销售情况图”，插入到表的A8：F18单元格区域内。