首页
登录
职称英语
Fifty volunteers were alphabetically divided into two equal groups, Group A to p
Fifty volunteers were alphabetically divided into two equal groups, Group A to p
游客
2023-07-31
48
管理
问题
Fifty volunteers were alphabetically divided into two equal groups, Group A to participate in a 7 week exercise program, and Group B to avoid deliberate (故意的,蓄意的) 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, file pulse rate of each subject was taken and recorded. This served as the pretest for tile 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 tile machine moved. Then, (or the next 3 days, they rode relaxed for 50 seconds of each minute, and pushed, pulled, anti pedaled actively for 10 seconds of each minute. The ratio of active riding was increased every few clays, 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] The post-exercise pulse rates of Group B were found on the average to have ______.
选项
A、not changed
B、gone down 28 beats per minute
C、gone down 30 beats per minute
D、gone down 4 beats per minute
答案
A
解析
此题在本文的最后一句可以找到答案,但要注意本句中没用“B组”这一说法,而是用的control group一词; 再看文章第一段第6句讲到A组是experimental group,由此可知control group就是B组了
转载请注明原文地址:http://tihaiku.com/zcyy/2883789.html
相关试题推荐
【S1】[br]【S9】N这一空主要是辨析好groups及crowds的意思即可。crowd指略含拥挤的人群,而group则无此意,故选N。
Mobilityofindividualmembersandfamilygroupstendstosplitupfamilyre
[originaltext]Kenyawasabeautifulcountryinhabitedbydifferentgroupso
[originaltext]Kenyawasabeautifulcountryinhabitedbydifferentgroupso
[originaltext]Kenyawasabeautifulcountryinhabitedbydifferentgroupso
Thelanguageofuncivilizedgroupsascomparedtowesternlanguageislimitedin
【B1】[br]【B15】A、caughtB、sharedC、dividedD、separatedB此题为动词与名词搭配辨析题,也是近义词辨析题。r
Itisawell-knownfactthatthereareconstantconflictsamongdifferentgroups
Developmentbanksareinternationallendinggroups.Theylendmoneytodevelopin
Developmentbanksareinternationallendinggroups.Theylendmoneytodevelopin
随机试题
Weallhaveoffensivebreathatonetimeoranother.Inmosteasesoffensive
Whichofthefollowingstatementsiscorrect?[br][originaltext]China’
[originaltext]W:What’swrongwithyourphone,Gary?Itriedtocallyouallni
制定管理标准务求全面完整,并要抓住重要环节。
信息科技非现场监管的风险识别与监测,不得作为制订现场检查方案或快速巡查的依据。(
(2018年真题)下列机构中,不符合股权投资基金管理人的组织形式规范的是(
下列不属于直接融资方式的有()。A.债券市场融资 B.商业信用融资 C.
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
十二月∶腊月A.医圣∶孙思邈 B.武圣∶陆羽 C.正月∶端月 D.七月∶桂
关于肺部吸收的描述不正确的是A.肺部给药吸收迅速 B.肺部给药不受肝脏首过效应
最新回复
(
0
)