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信息发布者:
we should be polite to our parents and help them do more housework at home.
When the neighbours are in trouble, we should try our best to help them with the problems. 
      At school, we should be friendly to our classmates and help each other. When we have finished 
reading the books, we should return them in time. It's necessary for us to protect the trees and flowers 
in our school. 
      In public places, we should always obey traffic rules. Remember not to push in before others or 
speak loudly in public. When we have dinner outside, we should follow the good table manners.
least
because
results
easier
advice
1. least
句意:苹果公司表示,手机与用户之间的距离至少应为1.5厘米。
根据第二段第2-3行:
Apple company, for example, doesn't want iPhones to come closer to you than 1.5 centimetres. (例如,苹果公司不希望iphone离你的距离超过1.5厘米。)
可知, 本处指“最少”,用短语at least 表示。
故填least
2. results
句意:研究的结果
根据本句对应的右边的方框的内容,可知,本处指研究的结果。研究得出了多个结果,因此result用复数results
3. because
句意:Devra Davis指出,由于移动辐射,20- 29岁年龄组的人比老年人更容易患脑癌。
根据第四段第2-3行:
Davis studies how often brain cancer happens in different age groups.    She finds a big increase in brain cancer in the 20-to-29 age group and a drop for the older people. (戴维斯研究脑癌在不同年龄组的发病率。她发现,20至29岁年龄组的脑癌发病率大幅上升,而年龄较大的人群发病率则有所下降。)
可知, 二十多岁的年轻人更容易得脑癌,和爱玩手机造成的移动辐射有关。因此本空意为“因为”because of 因为,由于,故填:because
4. easier
句意:戴维斯女士和其他科学家说,儿童比成人更容易受到辐射伤害。
根据第五段第1行:Children are more easily hurt by radiation than grown-ups (儿童比成年人更容易受到辐射的伤害)
设空处表示“更容易”,且在be动词后做表语,因此用easy的比较级easier
5. advice
句意:戴维斯女士关于如何安全使用手机的建议
根据本句对应的右边方框的内容,可知,本处指建议,故填advice
     Recently, all of us are talking about how to be students with good manners in our city. 
     In my opinion, we should be polite to our parents and help them do more housework at home. When the neighbours are in trouble, we should try our best to help them with the problems
      At school, we should be friendly to our classmates and help with each other.  When we have finished reading the books, we should return them in time. It's necessary for us to protect the trees and flowers in our school. 
      In public places, we should always obey traffic rules. Remember not to push in before others or speak loudly in public. When we have dinner outside, we should follow the good table manners
     If everyone behaves well, our city will be more beautiful and more attractive.

短语/词组总结:
① talk about 谈论
② be in trouble 在困难中
③ try one's best to do sth. 尽某人最大努力做某事
④ help sb. with sth. 帮助某人某事
⑤ be friendly to 对……友好
⑥ help each other 互相帮助
⑦ finish doing sth. 完成做某事
⑧ in time 及时
⑨ obey traffic rules 遵守交通规则
⑩ push in 插队
⑪ follow the good table manners 遵循良好的餐桌礼仪

本篇文章主要是介绍如何做一名懂礼貌的中学生。本篇文章是一篇议论文,按照所给的几个要点来写即可,但也需要适时加入一些内容充实文章。本篇范文用到了一些主从复合句和一些固定搭配,使文章看起来比较地道。结尾处作出了总结,这句话起到了画龙点睛的作用。