The author mentions two researchers’ studies (lines22-25) most likely in order to______
A. suggest that children’s political attitudes are formed primarily through textbooks
B. counter the claim that children are able to see through stereotypes in textbooks
C. suggest that younger children tend to interpret the messages in textbooks more literally than do older children
D. demonstrate that textbooks carry political messages meant to influence their readers
E. prove that textbooks are not biased in terms of their political presentations
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流行病学实验研究中的盲法是指
A. 研究对象见不到实验者
B. 实验者见不到研究对象
C. 参与研究的人员全部为盲人
D. 研究者和/或研究对象都不知道分组情祝
E. 负责安排和控制实验的人不知道研究目的
可单独用于轻度高血压患者的药物是
A. 呋口南苯胺酸
B. 依他尼酸
C. 布美他尼
D. 氢氯噻嚓
E. 速尿
According to the passage, a “hygiene factor” (lines 22-23) is an aspect of a worker’s performance that______
A. has no effect on the rating of a worker’s performance
B. is so basic to performance that it is assumed to be adequate for all workers
C. is given less importance than it deserves in rating a worker’s performance
D. if not likely to affect a worker’s rating unless it is judged to be inadequate
E. is important primarily because of the effect it has on a worker’s rating
缩宫素对于宫平滑肌作用特点是
A. 妊娠早期对药物敏感性增高
B. 小剂量即可引起强直性收缩
C. 收缩血管，升高血压
D. 引起子宫体兴奋收缩，子宫颈松弛
E. 引起子宫体松弛，子宫颈收缩
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