首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Fifty volunteers were alphabetically divided into two equal groups, Group A to participate 【1】a 7-week exercise program, and Gro
Fifty volunteers were alphabetically divided into two equal groups, Group A to participate 【1】a 7-week exercise program, and Gro
admin
2013-01-20
19
问题
Fifty volunteers were alphabetically divided into two equal groups, Group A to participate 【1】a 7-week exercise program, and Group B to avoid【2】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【3】of stepping up and down on a 16-inch bench【4】30 steps a minute for 5 minutes. One minute after completion of the step-test the pulse【5】of each subject was taken and recorded. This【6】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【7】for riders to ride relaxed during the first day’s ride,【8】holding on to the handle bars and foot pedals【9】the machine moved.【10】, 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【11】every few days,【12】by the third week it was half of each minute, and by the seventh week the riders were【13】15 solid minutes of active riding.
【14】end of the 7 weeks, the step-test was again【15】to both groups of subjects, and their pulses taken. The post-exercise pulse rates of subjects in the experimental group【16】found to have decreased a(n)【17】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【18】the same or changed no more than 4【19】, with a(n)【20】difference between the initial and final tests of zero.
选项
A、is
B、was
C、are
D、were
答案
D
解析
这句话的主语是rates,所以用be动词的复数过去时形式were。
转载请注明原文地址:https://kaotiyun.com/show/tu2O777K
0
考博英语
相关试题推荐
AnOhioStateUniversitystudyhaslinkedbehaviorinyoungchildren【1】thetypeofjobtheirmotherhas.Motherswithcomplexoc
AnOhioStateUniversitystudyhaslinkedbehaviorinyoungchildren【1】thetypeofjobtheirmotherhas.Motherswithcomplexoc
Cultureshockmightbecalledan【1】diseaseofpeoplewhohavebeensuddenly【2】abroad.Likemostailments,ithasitsown【3】andc
Cultureshockmightbecalledan【1】diseaseofpeoplewhohavebeensuddenly【2】abroad.Likemostailments,ithasitsown【3】andc
Cultureshockmightbecalledan【1】diseaseofpeoplewhohavebeensuddenly【2】abroad.Likemostailments,ithasitsown【3】andc
For【C1】______thebloodshedandtragedyofD-Day,thebeachesofNormandywillalwaysevokeacertain【C2】______:ayearningfor
It’samazingthattworesearchersworkingindependentlymadethesamediscovery______.
Sinceateacher’sresponseonastudent’spaperispotentiallyaninfluentialtextinawritingclass,weneedtoexamineourpra
Thediscoveryofnewoil-fieldsinvariouspartsofthecountryfilledthegovernmentwith_____hope.
随机试题
设函数f(x),g(x)满足条件:f’(x)=g(x),g’(x)=f(x).又f(0)=0,g(x)≠0.试求由曲线与x=0,x=t(t>0),y=1所围平面图形的面积,
超声波有纵波、横波和表面波三种振态,下列哪项是错误的
等剂量曲线的构成
在期货合约交割期内,买方或者卖方客户违约的,由违约方承担违约责任。()
拟设立基金管理公司的申请人要提前( )年向交易所递交自律承诺书。
()年10月15日至16日,神舟五号载人飞船成功升空并安全着陆。
由于面试官的偏见产生的误差包括()
病例:患者,男,65岁,高血压病18年,血脂高3年,冠心病心绞痛2年,近2个月胸痛发作频繁,休息或含服硝酸甘油效果欠佳,轻咳嗽吐少量白痰,1天来与家人争吵,胸痛20分钟不缓解,伴大汗送急诊。责任护士通过对患者的病史进行护理评估后,应考虑可能发生(
同盟会成立后发动的第一次武装起义是()
Summer’sunofficialendclosedoutadarkseasonforworkingteenagers.Theunemploymentratefor16-to19-year-oldsticked
最新回复
(
0
)