卫生类单选集考试卷模拟考试.题_6

1、姓名：_ 班级：_ 学号：_-密-封 -线- 卫生类单选集考试卷模拟考试.题考试时间：120分钟 考试总分：100分题号一二三四五总分分数遵守考场纪律，维护知识尊严，杜绝违纪行为，确保考试结果公正。1、*html*? ?阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。? ?researchers have known for years thatanimals have a “clock” somewhere in their brains a control-centre that regulatescircadian(生物节奏的) rhythms. circadi

2、an rhythms are the bodys daily biologicalcycles, controlling such activities as sleep and wakefulness. in november 1988,neuroscientists at the university of virginia in charlotteville reported thatthe supra chasmatic nucleus(scn), a small cluster(束)of cells in the middle ofthe brain that neuroscient

3、ists have long suspected of playing a role in dailyrhythms, is the long-sought biological clock.? ?the investigatorsperformed a series of tissue-transplant experiments with hamsters (仓鼠). some ofthe animals were normal hamsters, which have a circadian cycle of 24 hours; theothers were mutant(变异型)ham

4、sters whose cycles were only 20 or 22 hourslong.? ?the scientists first removed the scn from the brans of thehamsters in both groups. they then implanted an scn from a mutant hamster intothe brain of each normal animal, and vice versa. when the hamsters had recoveredfrom their operations, the circad

5、ian rhythms of the two groups were reversed.the normal hamsters had a daily cycle of 20 to 22 hours, and the mutants were ona 24-hour cycle.? ?the identification of the internal clock is animportant stepping-stone in understanding the basic, automatic mechanisms ofbrain function. it may also help in

6、 finding ways to relieve human sleepdisorders.the purpose of the experiments was to fund out how the clock works. （ ）a.a*html*right ? ? ? ? ? ? ? ? ?b.b*html*wrong ? ? ? ? ? ? ? ? ?c.c*html*not mentioned2、*html*? ?阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。? ?researchers have known for years thatanimals h

7、ave a “clock” somewhere in their brains a control-centre that regulatescircadian(生物节奏的) rhythms. circadian rhythms are the bodys daily biologicalcycles, controlling such activities as sleep and wakefulness. in november 1988,neuroscientists at the university of virginia in charlotteville reported tha

8、tthe supra chasmatic nucleus(scn), a small cluster(束)of cells in the middle ofthe brain that neuroscientists have long suspected of playing a role in dailyrhythms, is the long-sought biological clock.? ?the investigatorsperformed a series of tissue-transplant experiments with hamsters (仓鼠). some oft

9、he animals were normal hamsters, which have a circadian cycle of 24 hours; theothers were mutant(变异型)hamsters whose cycles were only 20 or 22 hourslong.? ?the scientists first removed the scn from the brans of thehamsters in both groups. they then implanted an scn from a mutant hamster intothe brain

10、 of each normal animal, and vice versa. when the hamsters had recoveredfrom their operations, the circadian rhythms of the two groups were reversed.the normal hamsters had a daily cycle of 20 to 22 hours, and the mutants were ona 24-hour cycle.? ?the identification of the internal clock is animporta

11、nt stepping-stone in understanding the basic, automatic mechanisms ofbrain function. it may also help in finding ways to relieve human sleepdisorders.the identification of the internal clock may help to relieve human sleeping problems. （ ）a.a*html*right ? ? ? ? ? ? ? ? ?b.b*html*wrong ? ? ? ? ? ? ?

12、? ?c.c*html*not mentioned3、*html*? ?阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。? ?researchers have known for years thatanimals have a “clock” somewhere in their brains a control-centre that regulatescircadian(生物节奏的) rhythms. circadian rhythms are the bodys daily biologicalcycles, controlling such activiti

13、es as sleep and wakefulness. in november 1988,neuroscientists at the university of virginia in charlotteville reported thatthe supra chasmatic nucleus(scn), a small cluster(束)of cells in the middle ofthe brain that neuroscientists have long suspected of playing a role in dailyrhythms, is the long-so

14、ught biological clock.? ?the investigatorsperformed a series of tissue-transplant experiments with hamsters (仓鼠). some ofthe animals were normal hamsters, which have a circadian cycle of 24 hours; theothers were mutant(变异型)hamsters whose cycles were only 20 or 22 hourslong.? ?the scientists first re

15、moved the scn from the brans of thehamsters in both groups. they then implanted an scn from a mutant hamster intothe brain of each normal animal, and vice versa. when the hamsters had recoveredfrom their operations, the circadian rhythms of the two groups were reversed.the normal hamsters had a dail

16、y cycle of 20 to 22 hours, and the mutants were ona 24-hour cycle.? ?the identification of the internal clock is animportant stepping-stone in understanding the basic, automatic mechanisms ofbrain function. it may also help in finding ways to relieve human sleepdisorders.the normal hamsters had a da

17、ily cycle of 24 hour, and the mutants were on a 20- hour cycle. （ ）a.a*html*right ? ? ? ? ? ? ? ? ?b.b*html*wrong ? ? ? ? ? ? ? ? ?c.c*html*not mentioned4、*html*? ?阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。? ?researchers have known for years thatanimals have a “clock” somewhere in their brains a control-

18、centre that regulatescircadian(生物节奏的) rhythms. circadian rhythms are the bodys daily biologicalcycles, controlling such activities as sleep and wakefulness. in november 1988,neuroscientists at the university of virginia in charlotteville reported thatthe supra chasmatic nucleus(scn), a small cluster

19、(束)of cells in the middle ofthe brain that neuroscientists have long suspected of playing a role in dailyrhythms, is the long-sought biological clock.? ?the investigatorsperformed a series of tissue-transplant experiments with hamsters (仓鼠). some ofthe animals were normal hamsters, which have a circ

20、adian cycle of 24 hours; theothers were mutant(变异型)hamsters whose cycles were only 20 or 22 hourslong.? ?the scientists first removed the scn from the brans of thehamsters in both groups. they then implanted an scn from a mutant hamster intothe brain of each normal animal, and vice versa. when the h

21、amsters had recoveredfrom their operations, the circadian rhythms of the two groups were reversed.the normal hamsters had a daily cycle of 20 to 22 hours, and the mutants were ona 24-hour cycle.? ?the identification of the internal clock is animportant stepping-stone in understanding the basic, auto

22、matic mechanisms ofbrain function. it may also help in finding ways to relieve human sleepdisorders.scn plays a role in daily rhythms. （ ）a.a*html*right ? ? ? ? ? ? ? ? ? ?b.b*html*wrong ? ? ? ? ? ? ? ? ?c.c*html*not mentioned5、*html*? ?阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。? ?researchers have known

23、for years thatanimals have a “clock” somewhere in their brains a control-centre that regulatescircadian(生物节奏的) rhythms. circadian rhythms are the bodys daily biologicalcycles, controlling such activities as sleep and wakefulness. in november 1988,neuroscientists at the university of virginia in char

24、lotteville reported thatthe supra chasmatic nucleus(scn), a small cluster(束)of cells in the middle ofthe brain that neuroscientists have long suspected of playing a role in dailyrhythms, is the long-sought biological clock.? ?the investigatorsperformed a series of tissue-transplant experiments with

25、hamsters (仓鼠). some ofthe animals were normal hamsters, which have a circadian cycle of 24 hours; theothers were mutant(变异型)hamsters whose cycles were only 20 or 22 hourslong.? ?the scientists first removed the scn from the brans of thehamsters in both groups. they then implanted an scn from a mutan

26、t hamster intothe brain of each normal animal, and vice versa. when the hamsters had recoveredfrom their operations, the circadian rhythms of the two groups were reversed.the normal hamsters had a daily cycle of 20 to 22 hours, and the mutants were ona 24-hour cycle.? ?the identification of the inte

27、rnal clock is animportant stepping-stone in understanding the basic, automatic mechanisms ofbrain function. it may also help in finding ways to relieve human sleepdisorders.scientists are cruel to do experiments with hamsters. （ ）a.a*html*right ? ? ? ? ? ? ? ? ?b.b*html*wrong ? ? ? ? ? ? ? ? ?c.c*ht

28、ml*not mentioned6、*html*? ?阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。? ?researchers have known for years thatanimals have a “clock” somewhere in their brains a control-centre that regulatescircadian(生物节奏的) rhythms. circadian rhythms are the bodys daily biologicalcycles, controlling such activities as sle

29、ep and wakefulness. in november 1988,neuroscientists at the university of virginia in charlotteville reported thatthe supra chasmatic nucleus(scn), a small cluster(束)of cells in the middle ofthe brain that neuroscientists have long suspected of playing a role in dailyrhythms, is the long-sought biol

30、ogical clock.? ?the investigatorsperformed a series of tissue-transplant experiments with hamsters (仓鼠). some ofthe animals were normal hamsters, which have a circadian cycle of 24 hours; theothers were mutant(变异型)hamsters whose cycles were only 20 or 22 hourslong.? ?the scientists first removed the

31、 scn from the brans of thehamsters in both groups. they then implanted an scn from a mutant hamster intothe brain of each normal animal, and vice versa. when the hamsters had recoveredfrom their operations, the circadian rhythms of the two groups were reversed.the normal hamsters had a daily cycle o

32、f 20 to 22 hours, and the mutants were ona 24-hour cycle.? ?the identification of the internal clock is animportant stepping-stone in understanding the basic, automatic mechanisms ofbrain function. it may also help in finding ways to relieve human sleepdisorders.biological clock tells time. （ ）a.a*h

33、tml*right ? ? ? ? ? ? ? ? ?b.b*html*wrong ? ? ? ? ? ? ? ? ?c.c*html*not mentioned7、*html*? ?阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。? ?researchers have known for years thatanimals have a “clock” somewhere in their brains a control-centre that regulatescircadian(生物节奏的) rhythms. circadian rhythms are the bodys daily biologicalcycles, controlling such activities as sleep and wakefulness. in november 1988,neuroscientists at the university of virginia in charlotteville reported thatthe supra chasmatic nucleus(scn), a small cluster(束)of cells