首页
登录
职称英语
Fifty volunteers were alphabetically divided into two equal groups, Group A
Fifty volunteers were alphabetically divided into two equal groups, Group A
游客
2025-03-19
36
管理
问题
Fifty volunteers were alphabetically divided into two equal groups, Group A to participate in a 7 weeks exercise program, and Group B to avoid deliberate exercise of any sort during those 7 weeks. On the day before the exercise program began, all 50 men participated in a step-test. This consisted of stepping up and down on a 16-inch bench at 30 steps a minute for 5 minutes.
One minute after completion of the step-test, the pulse rate of each subject was taken and recorded. This served as the pretest for the experiment. For the next 7 weeks, subjects in the experimental group (Group A) rode an Exercycle (a motor-driven bicycle-type exercise machine) for 15 minutes each day. The exercise schedule called for riders to ride relaxed during the first day’s ride, merely holding on to the handle bars and foot pedals as the machine moved. Then, for the next 3 days, they rode relaxed for 50 seconds of each minute, and pushed, pulled, and pedaled actively for 10 seconds of each minute. The ratio of active riding was increased every few days, so that by the third week it was half of each minute, and by the seventh week the riders were performing 15 solid minutes of active riding.
At the end of the 7 weeks, the step-test was again given to both groups of subjects, and their pulses taken. The post-exercise pulse rates of subjects in the experimental group were found to have decreased an average of 30 heart beats per minute, with the lowest decrease 28 and the highest decrease 46. The pulse rates of subjects in the control group remained the same or changed no more than 4 beats, with an average difference between the initial and final tests of zero. [br] What did Group A do in their program?
选项
A、They stepped up and down on a bench each day.
B、They pushed and pulled on exercise handles every day.
C、They rode on an Exercycle every day.
D、They refrained from any exercise.
答案
C
解析
这同样是一道细节题。文中第一段第六句说:“在接下来的七周内,此次实验小组(小组A)的实验对象每天要在健身脚踏车上骑上15分钟。”故选项C正确。解答这一问题的关键是要结合文章的主题思想,确定出对两个实验小组的计划安排。
转载请注明原文地址:http://tihaiku.com/zcyy/4003537.html
相关试题推荐
Theapplesweredivided______accordingtotheageandsizeofthechildren.A、equ
Fiftyvolunteerswerealphabeticallydividedintotwoequalgroups,GroupA
Fiftyvolunteerswerealphabeticallydividedintotwoequalgroups,GroupA
Fiftyvolunteerswerealphabeticallydividedintotwoequalgroups,GroupA
Fiftyvolunteerswerealphabeticallydividedintotwoequalgroups,GroupA
Manysmallculturalgroupsliveinplacesfarawayfrommoderncities.Some
Manysmallculturalgroupsliveinplacesfarawayfrommoderncities.Some
InBritainthenewspapermarketisdividedbetweenthelargerbroadsheetsan
Theyare______fromeachotherbycommas.A、separatedB、dividedC、distributedD、
Ingeneral,peopletalkabouttwogroupsofcolors:warmcolorsandcoolcolo
随机试题
AvasthealthcheckupisnowbeingconductedinthewesternSwedishprovince
[originaltext]M:Ireallydon’tknowwhattodothissummer.Ican’taffordto
坡度为10%的金属板屋面,当采用低波压型金属板时,其纵向最小搭接长度应为多少?(
某建设项目建设投资估算为100000万元(含增值税)其中,设备购置费40000万
患者男,75岁。医生完成诊断后,患者到药房取某口服液,药房人员的下列言行中恰当的
甲公司财务部门正在编制下一年度的筹资计划,公司本年度的资产总计为3000万元,负
在国债期货基差交易中,和做多基差相比,做空基差的难度在于( )。A.做空基差盈
依据《期货公司董事、监事和高级管理人员任职资格管理办法》的规定,高级管理人员包括
影响规范承诺的最关键因素不包括()。A.组织对规范承诺的要求程度 B.员
设备采购评审包括().A.分级评审 B.综合评审 C.商务评审 D.经验
最新回复
(
0
)