何承矩字正则。幼为棣州衙内指挥使，从继筠讨刘崇，擒其将胡澄以献，论功授闲厩副使。太平兴国五年，知河南府。时调丁男百十辈转送上供纲，承矩以为横役，奏罢其事。徙知潭州，疏为政之害民者数十事上之，悉被容纳。凡六年，囹圄屡空，诏嘉奖之。米信知沧州，以其不习吏事，命承矩知节度副使，实专郡治。时契丹挠边，承矩上疏曰：“若于顺安砦西开易河蒲口，导水东注于海，资其陂泽，筑堤贮水为屯田，可以遏敌骑之奔轶。其无水田处，亦望选兵戍之，简其精锐，去其冗缪。”太宗嘉纳之。属霖雨为灾，典者多议其非便。承矩引援汉、唐屯田故事，以折众论。乃以承矩为制置河北缘边屯田使，俾董其役。由是自顺安以东濒海，广袤数百里，悉为稻田，民赖其利。淳化四年，擢知雄州。契丹精骑数千夜袭城下，伐鼓纵火，以逼楼堞。承矩整兵出拒，迟明，列阵酣战久之，斩馘甚众，契丹遁去。秩满，召还，拜引进史。州民百余谒阙贡马，乞借留承矩，赐金紫，诏许再任。真宗嗣位，以事有缓急，难于匀济，命承矩为四路都转运使，要切之务，俾同规画。丁内艰，时以边兵稍息，农政未修，起复授置缘边安托使，且诏边民诱其复业。承矩曰：“契丹闻之，必谓诱其部属也。”乃易诏文为水旱流民之意。王钦若时知枢密援汉虫达周仲居改诏请罪承矩帝曰承矩任边有功当优假之第诏自今朝旨未便者奏禀进止。景德元年，入朝，进领英州团练使。时议防秋北鄙，承矩犹屡表请行，上以其老闵之，不许。三年卒，年六十一。特赠相州观察使，赙钱五十万，绢五百匹，中使护葬。

（选自《宋史·列传三十四》，有删节）

使用显微镜应用左眼看目镜，右眼同时睁开．　（      ）

    Here are the lessons that my first swimming experience taught me about starting a business.

    ____For the first time, I went beyond thinking of swimming and actually made a conscious decision to swim. When it comes to starting that business, it's enough with the wishing, thinking and talking. You need to make a conscious decision to start.____ It is something you have to do consciously. Thus you need to go beyond desiring that business.

    Tell your friends and family about your decision. I started telling my close friends and family members about my intention to go swimming for the first time. Some of them laughed at me, but it didn't stop me. I did it for two reasons. On one hand, I wanted to receive encouragement On the other hand, however, telling people about it made me responsible for them____ You can discuss the plan with your boss or best friend.

    Secure yourself. After getting my swimming ticket, I quickly asked for a lifebelt I wasn't about, to go into the swimming pool for the first time without it. Prevention is always better and cheaper than cure Make security a priority in your new business.____

    Enjoy yourself. Yeah, I had a lot of fun at the pool.____ Starting and running a business should also involve an amount of fun. I don't mean you should not take things seriously. But not until you do what you enjoy, or enjoy what you do and have fun in the process, can your business be successful.

A. Decide to take action.

B. Make up your mind and just wait silently.

C. So go ahead and tell someone about your business plans.

D. I hung out with my friends and we all had a wonderful time.

E. Put as much money as you can in business regardless of security.

F. Making a decision involves more than just wishing for something to happen.

G. The higher the worth of the business is, the more effort you should put in security.

理论分析可得出弹簧的弹性势能公式 $E_P=\frac{1}{2}k{x}^2$ （式中k为弹簧的劲度系数，x为弹簧长度的变化量）．为验证这一结论，A、B两位同学设计了以下的实验：①两位同学首先都进行了如图甲所示的实验：将一根轻质弹簧竖直挂起，在弹簧的另一端挂上一个已知质量为m的小铁球，稳定后测得弹簧伸长d．

②A同学完成步骤①后，接着进行了如图乙的实验：将这根弹簧竖直地固定在水平桌面上，并把小铁球放在弹簧上，然后竖直地套上一根带有插销孔的长透明塑料管．利用插销压缩弹簧．拔掉插销时，弹簧对小球做功，使小球弹起，测得弹簧的压缩量和小铁球上升的最大高度H．

③B同学完成步骤①后，接着进行了如图丙的实验：将这根弹簧放在水平桌面上，一端固定在竖直的墙上，另一端被小铁球压缩，测得压缩量为x，释放弹簧后，小铁球从高为h的桌面上水平抛出，抛出的水平距离为L．