组成人体细胞的主要成分是[ ] A．水 B．有机物 C．蛋白质 D．维生素

中国农业发展银行的资金来源是（）。

A.发行国家政策性金融债券

B.中国人民银行的再贷款

C.从国际金融市场上筹措资金

D.从国内金融市场上筹措资金

2010年政府要进一步支持粮食生产，改善农村生产生活条件；弥补教育基础设施、公共卫生体系等公共事业；支持西部大开发、东北等老工业基地调整改造和中部崛起，促进技术进步和产业升级；支持农村税费、社会保障等各项改革，解决历史遗留问题。这体现了政府履行______职能。[ ]

A.   参与经济活动    

B．维护国家安全    

C．协调各方利益    

D．维护市场秩序

等差序列填充的步骤为（）。

A、先选定两个单元格的填充区域，然后输入等差数列的前两个值，再拖动区域的填充柄；

B、先选定两个单元格的填充区域，然后输入等差数列的前两个值，再拖动区域的边框

C、先选定等差数列的填充区域，然后输入等差数列的第一个值，再单击菜单栏中"视图一"填充"；

D、先选定等差数列的填充区域，然后输入等差数列的第一个值，再单击菜单栏中"格式"--"填充"。

This week marks the 10th anniversary of the Alar apple scare, in which many American consumers were driven into a panic following the release of a report by an environmental organization claiming that apples containing the chemical Alar posed a serious health threat to preschoolers. The report was disseminated through a PR (Problem Report) campaign and bypassed any legitimate form of scientific peer review. Introduced to the American public by CBS "60 Minutes", the unsubstantiated claims in the report led some school districts to remove apples from their school lunch programs and unduly frightened conscientious parents trying to develop good eating habits for their children.

Last month, Consumers Union released a report warning consumers of the perils of consuming many fruits and vegetables that frequently contained "unsafe" levels of pesticide residues. This was especially true for children, they claimed. Like its predecessor 10 years earlier, the Consumers Union report received no legitimate scientific peer review and the public’s first exposure to it was through news coverage.

Not only does such reporting potentially drive children for consuming healthful fruits and vegetables, the conclusions were based on a misleading interpretation of what constitutes a "safe" level of exposure. Briefly, the authors used values known as the "chronic reference doses", set by the U. S. environmental Protection Agency, as their barometers of safely. Used appropriately, these levels represent the maximum amount of pesticide that could be consumed daily for life without concern. For a 70-year lifetime, for example, consumers would have to ingest this average amount of pesticide every day for more than 25,000 days. It is clear, as the report points out, that there are days on which kids may be exposed to more; it is also clear that there are many more days when exposure is zero. Had the authors more appropriately calculated the cumulative exposures for which the safety standards are meant to apply, there would have been no risks and no warnings.

Parents should feel proud, rather than guilty, of providing fruits and vegetables for their children. It is well established that a diet rich in such foods decreases the risk of heart disease and cancer. Such benefits dramatically overwhelm the theoretical risks of tiny amounts of pesticides in food. So keep serving up the peaches, apples, squash, grapes and pears.

The last month report parallels that on the Alar apple scare in that .()

A. neither really caused worry among the public

B. neither underwent a scientific peer review

C. neither provided statistical supports

D. neither aimed for the public good

以下对于公司相册说法有误的是（）

A.长期有效

B.数量多

C.直观

D.相册照片只能全部对外公开