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【单选题】
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 citing of dangerous effects of pesticides on laboratory animals in paragraph 3 is used to suggest that ______.
A.
scientists are also concerned with the effects of pesticides on animals
B.
cancer is the worst effect of the pesticides
C.
most or all of the dangerous effects of pesticides are now known
D.
the chemicals may also cause these effects in humans
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【单选题】患者,男性,10岁,发热、咳嗽、咽痛1周,2天后出现颈背痛,头部不能屈伸、旋转,四肢无异常。考虑的诊断为
A.
落枕
B.
寰枢椎半脱位
C.
风湿关节肌炎
D.
强直性脊柱炎
E.
颈椎结核
【判断题】并非所有的振动都会产生红外吸收,只有偶极矩发生变化的振动才能引起可观测的红外吸收,这种振动称为红外活性振动;偶极矩等于零的分子振动不能产生红外吸收,称为红外非活性振动。
A.
正确
B.
错误
【简答题】法家提出的“壹法”指的是()。 A统一立法权 B统一法令的内容 C统一人们的思想 D执法的主张
【多选题】人权是( )和( )的统一
A.
个体人权和集体人权
B.
政治权利和人身权利
C.
普遍性和特殊性
D.
生存权和发展权
【判断题】只有引起分子偶极矩发生变化的振动才会产生红外吸收。
A.
正确
B.
错误
【单选题】患者男性,10岁,发热、咳嗽、咽痛1周。最近2天颈背痛,头部不能屈伸、旋转,四肢无异常。最简便有效的检查为
A.
颅底侧位和张口正位X线平片
B.
颈部CT
C.
颈段MRI
D.
外周血白细胞计数和分类
E.
风湿全套实验室检查
【单选题】课题和文章富有生命力的标志是具有
A.
科学性
B.
创新性
C.
实用性
D.
逻辑性
【单选题】患者,男,10岁,发热,咳嗽,咽痛,1周,近两日颈背痛,头部不能屈伸和旋转,四肢无异常,考虑的诊断为
A.
落枕
B.
颈1、2椎体自发性脱位
C.
风湿性肌炎
D.
强直性脊柱炎
E.
颈椎结核
【单选题】患者,男性,10岁,发热、咳嗽、咽痛1周。近2日颈背痛,头部不能屈伸、旋转,四肢无异常。考虑的诊断为()
A.
落枕
B.
寰枢椎半脱位
C.
风湿关节肌炎
D.
强直性脊柱炎
E.
颈椎结核
【单选题】患者,男性,10岁,发热、咳嗽、咽痛1周。近2日颈背痛,头部不能屈伸、旋转,四肢无异常。最简便有效的检查为()
A.
颅底侧位和张口正位X线平片
B.
颈部CT
C.
颈段MRI
D.
外周血白细胞计数和分类
E.
风湿全套化验
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