英语 阅读理解A

章节摘录

　　Fifty volunteers were alphabetically divided into two equal groups,Group A to participate in a 7-week exercise program and Group B toavoid deliberate exercise of any sort during those 7 weeks. On the daybefore 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 aminute for 5 minutes. One minute after completion of the step-test, thepulse rate of each subject was taken and recorded. This served as thepretest for the experiment. For the next 7 weeks, subjects in theexperimental group （Group A） rode a motorcycle for 15 minutes eachday. The exercise schedule called for riders to ride relaxed during thefirst day s ride, merely holding on to the handle bars and foot pedals asthe machine moved. Then, for the next 3 days, they rode relaxed for 50seconds of each minute,and pushed, pulled, and pedaled actively for 10seconds of each minute. The ratio of active riding was increasedevery few days, so that by the third week it was half of each minute, andby 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 bothgroups of subjects, and their pulses taken. The post-exercise pulse ratesof subjects in the experimental group were found to have decreased anaverage of 30 heart beats per minute, with the lowest decrease 28 and thehighest decrease 46. The pulse rates of subjects in the control groupremained the same or changed no more than 4 beats, with an averagedifference between the initial and final tests of zero.

媒体关注与评论

　　一日一钱，千日千钱。绳锯木断，水滴石穿。　　——罗大经　　加紧学习，抓住中心，宁精勿杂，宁专勿多。　　——周恩来　　学习并不等于就是摹仿某些东西，而是掌握技巧和方法。　　——高尔基　　博观而约取，厚积而薄发。　　——苏轼

书籍目录

命题规律备考策略
专题一 广告信息类
 五年高考分类汇编
 三年模拟分级特训
 原创预测高考押题
专题二 科普知识类
 五年高考分类汇编
 三年模拟分级特训
 原创预测高考押题
专题三 环境保护类
 五年高考分类汇编
 三年模拟分级特训
 原创预测高考押题
专题四 社会文化类
 五年高考分类汇编
 三年模拟分级特训
 原创预测高考押题

作者简介

　　选题经典 五年高考题、三年模拟题、原创预测题，精挑细选、三维组合
　　形式新颖 各类试题以题组形式出现，梯度合理、训练高效
　　答案独特 知识链接、方法技巧、易错警示等融于其中，授之以渔
　　分册出版 各个击破，让你的每个知识板块优者更优、劣者突破

图书封面

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