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    彭城景思王浟，字子深，神武第五子也。博士韩毅教浟书，见浟笔迹未工，戏浟曰：“五郎书画如此，忽为常侍开国，今日后，宜更用心!”浟正色答曰：“昔甘罗为秦相，未闻能书。凡人唯论才具何如，岂必勤勤笔迹。博士当今能者，何为不作三公?”时年盖八岁矣。毅甚惭。

    武定六年，出为沧州刺史。为政严察，部内肃然。守令参佐，下及胥吏，行游往来，皆自赍粮食。浟纤介知人间事，有隰沃县主簿张达，尝诣州，夜投人舍，食鸡羹，浟察知之。守令毕集，浟对众曰：“食鸡羹何不还他价直也?”达即伏罪，合境号为神明。又有一人从幽州来，驴驮鹿脯。至沧州界，脚痛行迟，偶会一人为伴，遂盗驴及脯去。明旦告州，浟乃令左右及府僚吏分市鹿脯，不限其价。其主见脯识之，推获盗者。转都督、定州刺史。时有人被盗黑牛，背上有白毛。长史韦道建谓中从事魏道胜曰：“使君在沧州日，禽奸如神。若捉得此贼，定神矣。”浟乃诈为上符，市牛皮，倍酬价直。使牛主认之，因获其盗。建等叹服。又有老母姓王，孤独，种菜三亩，数被偷。浟乃令人密往书菜叶为字，明日，市中看菜叶有字，获贼。尔后境内无盗，政化为当时第一。

    天保初，封彭城王。四年，征为侍中，人吏送别悲号。有老公数百人，相率具馔白浟曰：“自殿下至来五载，人不识吏，吏不欺人。百姓有识已来，始逢今化。殿下唯饮此乡水，未食百姓食，聊献疏薄。”浟重其意，为食一口。七年，转司州牧，选从事皆取文才士明剖断者，当时称为美选。州旧案五百余，浟未期悉断尽。

    河清三年三月，群盗田子礼等数十人谋劫浟为主诈称使者径向浟第至内室称敕牵浟上马，临以白刃，欲引向南殿。浟大呼不从，遂遇害，时年三十二，朝野痛惜焉。

（节选自《北齐书 卷十》有删节）

    Do equations and historical( 历史的) facts give you a headache? A change in the school timetable(课程表) may be the cure.

    This  suggestion  is  based  on  a  recent  study  carried  out  by  scientists  from  Royal  Holloway, University of London, the UK. They found that teenagers could get higher marks in math if they studied in the mornings and better grades in history if they were taught in the afternoons.

    The researchers studied students' grade reports, class timetables and absence rates( 缺席率) at a middle school in Bulgaria over nine years. The results showed that when teenagers had math classes earlier in the day, they scored about 7 percent higher in tests than when taught in the afternoon. Lower-ability students feel stressed most when they were studying math in the afternoon. In history, students taught in the afternoon scored about 6 percent higher than when they were taught in the morning. However, there was no sign that similar patterns( 模 式 ) work for other subjects such as languages or geography.

    Velichka Dimitrova, who did the study, said the findings show that we perform( 表 现 ) better at different times of the day. “In the morning, our brains are better and fresher, so we are better at doing something like problem solving, where we require more speed and attention” Dimitrova told The Telegraph. “In the afternoon, it seems that this process slows down. On the other hand, history is more suitable for the afternoon, when we are more creative and open to discussion,” she said. Subjects such as foreign languages require both memory and creativity. This is perhaps why the time of day had no influence on language learning.

    Time-of-day influences such as these are believed to have something to do with the body clock.

    This is the system in our bodies that controls when we need to sleep. Some schools in the US and UK have tried later school starting times for teenagers, whose body clocks change as they grow into adults. Dimitrova believes schools should jump at this chance to improve their students' performance just by changing their timetables.

科学探究是探索生命的重要方法，其中的实验是验证假设的基本途径，科学探究常常需要进行对照实验．下列有关对照实验的做法中，正确的是（  ）

阅读下列材料和我国部分地区略图，回答问题。

材料：2011年，国务院相继颁布《山东半岛蓝色经济区发展规划》、《关于促进内蒙古自治区经济社会又好又快发展若干意见》、《关于支持河南加快建设中原经济区的指导意见》，对我国部分区域经济发展战略进行总体部署，促进区域经济又好又快发展。