ElectricBackpack Backpacks are convenient. They can hold your books,your lunch,and achange of clothes,leaving your hands free to do other things.Someday,if youdont mind carrying a heavy load,your backpacks might also power your MP31player,keep your cell phone running,and maybe even light your wayhome. The backpacks electricity-creating powers depend onsprings used to hang a cloth pack from its metal frame.The frame sits againstthe wearers back,and the whole pack moves up and down as the person walks.Agear mechanism converts vertical movements of the pack to rotary motions of anelectrical generator,producing up to 7.4 watts. The backpack could be especially useful forsoldiers,scientists,mountaineers,and emergency workers who typically carryheavy backpacks.For the rest of us,power-generating backpacks could make itpossible to walk,play video games,watch TV,and listen to music,all at the sametime.Electricity-generating packs arent on the market yet,but if you do get one eventually,just make sure to look both ways before crossing thestreet! 1. Backpacks are convenient because B they can hold as many things as you want to carry. D you do not have to carry things withyou. A It produces electricity forelectronic devices while the wearer walks. C It is small andconvenient. 3. The word springs inParagraph 3 means B the season of the year,occurring between winter and summer. D a length of metal woundaround,which returns to its original shape after 4. According to Paragraph 4,what does Rome plan to do? B To put the backpack on the market. D To promote the backpack in anewspaper or on television. ways before crossing the street!? B Enjoyingelectronic devices while walking may invite traffic accidents. D It is wise of you to have such abackpack. 1.C第一段告诉我们,因为背包可以装许多东西,所以可以将双手解放出来做其他事情:tofree your hands to do other things。 3.D springs在此是弹簧的意思。spring是一个多义词:泉水、春天、弹跳。 5.B这个句子的字面意思是:如果你终于得到这样的背包,过马路时一定要两面都看看。也就是说,不要因为同时玩着游戏,听着音乐、看着电视,太专注以致不注意来往车辆了。
SAT阅读备考的四个疑问解答
SAT阅读定位技巧指导
真题讲解SAT填空题中的取反信号词
名师:SAT阅读的小清新
SAT阅读长对比的难点及备考方法指导
SAT阅读备考中的常见问题
SAT阅读:怎么得到文章的结构?
SAT阅读单词与句子的游戏
如何利用SAT阅读真题备考SAT词汇
如何根据SAT阅读考试特点和题型提升分数?
SAT填空题最大的考察点就是单词
SAT阅读的做题时间安排参考
SAT阅读完成句子练习题(含注释)
SAT阅读考试介绍
SAT阅读部分的试题结构及应试技巧
SAT阅读资料推荐(文学类、科学类、社会类)
SAT阅读主旨题解法简析
SAT阅读考试的要点解读
实例讲解SAT阅读长难句如何分解?
实例讲解如何用逻辑解题法攻克SAT填空题
词汇量不足的童鞋如何巧答SAT阅读?
SAT阅读的两种逻辑题:假设和类比
SAT阅读问题的类型分析
SAT填空题解题技巧:整理归纳意群
SAT阅读背景资料:The Great Gatsby
SAT阅读背景知识补充材料:文学术语(二)
SAT阅读经验分享:合理规划做题步骤及时间
SAT阅读句和句之间关系
详解扩大SAT阅读量的四种方法
SAT阅读假设题的解题思路
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