—Which animal lives in Arctic? —The ____

提倡晚婚和提倡少生都可以控制人口的增长，从作用上看它们有什么区别？

第18～20题男，40岁，农民，渐起高热已11天，为稽留热，40℃，同时伴有纳呆，脉搏88次／分,轻度黄疸及肝、脾肿大，AIT 200 U，精神萎靡，无腹胀及腹水症。

确诊患者所患疾病最适宜的检查是：（）

A．严格测体温

B．做血嗜酸性粒细胞绝对计数

C．血培养

D．血沉

E．大便培养

城市规划行政体系是指( )。

A．城市规划体系的核心，在一个法治国家，所有的公共行为都必须经法律的授权并符合法律的要求

B．城市规划行政管理权限的分配、行政组织的架构以及行政过程的整体

C．围绕着城市规划工作和行为的开展过程所建立起来的结构体系，也可以理解为运行体系或运作体系

D．既是一项社会实践，又是一项政府职能，同时也是一项专门技术

中共十三大最重要的理论贡献是( )

A．重新确立了马克思主义路线
B．阐述了社会主义初级阶段理论
C．确立了建立市场经济体制的目标
D．确立了邓 * * 理论的指导地位

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.

In the Mar apple scare, many Americans were frightened because ().

A. scientists warned that apples were dangerous

B. many school children became ill after eating apples

C. it was reported that apples were harmful to health

D. apples were discovered to have too much pesticide