下面算式中，结果最小的是（ ） A．49÷8 B．49×8 C．8÷49

原发免疫性血小板减少症治疗的一线药物不包括（）

A.硫唑嘌呤

B.泼尼松

C.地塞米松

D.甲泼尼龙

E.静脉输注丙种球蛋白

无形资产的摊销期自其可供使用时(即其达到能够按管理层预定的方式运作所必须的状态)开始至终止确认时止。( )

最适于餐具的消毒方法是（）。

红岩中的同志们在狱中为（）举行了追悼会。

A.余新江

B.华子良

C.龙光华

D.许云峰

The use of chemicals in almost all areas of life has become a commonplace phenomenon. There is growing evidence, however, that chemicals in the environment, including pesticides, may contribute to some illnesses. While studies are still being conducted, preliminary conclusions point to the verdict that such chemicals are indeed negatively impacting those humans to whom they are exposed.

Children are especially vulnerable to toxic substances. Pound for pound, they eat, drink and breathe more than adults, all of which exposes them more heavily to those chemicals to which most individuals encounter on a daily basis. Furthermore, their bodies are still in developing stages, exacerbating the negative effects of those chemicals, which negatively impact them.

Of 50 types of pesticides commonly used in American schools, a study conducted by the National Coalition Against the Misuse of Pesticides found that many caused negative reactions in laboratory animals. Such negative effects included kidney and liver damage, cancer, and neurological and reproductive problems.

These implications of these findings are far-reaching. Given the variety of harmful effects attributed to those pesticides tested, one must pause and consider whether it is wise to continue their use in the nation’s schools, where children will be constantly exposed to them. Activists have lobbied for the elimination of such use with a degree of success, and recent findings, if supported by further analysis and confirmation, may help further the cause. A long term solution or alternative, however, remains elusive.

In the short run, however, there may be some measures that can be taken to mitigate the harmful effects of dangerous pesticides. The American Medical Association’s Council on Scientific Affairs concluded in a 1997 report that given the "particular uncertainty.., regarding the long-term health effects of low-dose pesticide exposures," it is "prudent" for adults and children to limit their exposure and to "consider the use of the least toxic chemical pesticides or non-chemical alternatives. \

The author cites the American Medical Association’s advice in paragraph 5 in order to（）

A. present more factual details to clarify the issue

B. present an alternative theory for consideration

C. present a recommendation from a reputable source

D. present a solution drawn from all the evidence considered