用电流表和电压表测定电池的电动势E和内阻r，所用电路如图（a）所示，一位同学测得的六组数据如下表所示．

    I know what you're thinking: pizza (比萨饼)? For breakfast? But the truth is that you can have last night's leftovers in the a. m. if you want to.

    I know lots of women who skip breakfast (不吃早餐), and they have a ton of different excuses for doing it. Some say they don't have time, others think they're “saving” calories (卡路里), still others just don't like breakfast food.

But the bottom line is that eating in the morning is very important when you're trying to lose weight. “Eating just about anything from 300 to 400 calories would be better than nothing at all,” says Katherine Brooking, R, D, who developed the super-easy eating plan for this year's “SELF CHALLENGE”. And even pizza can be healthy if it's loaded with vegetables, and you stick to one small piece.

    Breakfast is one meal I never miss, and the same goes for most weight loss success stories. Research shows that eating breakfast keeps you from overeating later in the day. Researchers at the University of Southern California found that breakfast skippers have a bigger chance of gaining weight than those who regularly have a morning meal.

    So eat something in the morning, anything. I know plenty of friends who end up having no breakfast altogether, and have just coffee or orange juice. I say, try heating up last night's leftovers-it may sound crazy, but if it works for you, do it! I find if I tell myself, “You can always cat it tomorrow,” I put away the leftovers instead of eating more that night. Try it...you may save yourself some pre-bedtime calories. And watch your body gain the fat-burning effects.

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                                                                                                                             我爱我家

        ①我出生在一个普通的家庭中，父母都在很普通的岗位上工作，但就是这么一个普通的家庭，却处处都充满着幸福的旋律。

        ②首先是一家之主——爸爸，爸爸是一名教师，在工作上勤勤恳恳，同时他也是一个特别恋家的人，每天下班后的“工作”就是回家，爸爸几乎不在外面吃饭。他总是说：“外面的鱼肉再好吃。也抵不过妈妈的手艺，而且吃得放心。”

        ③爸爸平时话不多，对事情很执着，只要是他认为对的，若是别人拿不出什么真凭实据，他是不会改变观点的。在学习上，爸爸是我的导师、我的智囊，在家务上是妈妈的好帮手，在滑游戏方面，则成了我的敌手。但无论什么时候，他都是我的好爸爸。

        ④然后是美丽温柔的妈妈。我敢说妈妈绝对是一个理家好手，不仅仅对丈夫、女儿体贴，而且对老人也是照顾有加。那次奶奶病了，妈妈几乎每天都要去趟奶奶家，嘘寒问暖的，又是做饭，又是拿一些脏的衣物回家来洗。做这些事情妈妈从没有过怨言，在她的观念中还保留着传统的做规矩：做一个贤惠的妻子。

        ⑤我把妈妈称为家里的大厨，因为不管是什么材料，在她的手中这么一次换几下，就会变成一道美味菜肴。现在，妈妈也讲究菜的营养搭配、荤素搭配，而且妈妈偶尔还会做一些她小时候吃的菜，吃起来真是别有一番滋味。

        ⑥然后是喜欢安静的我，也有，一些贪玩、贪嘴的我。初中生活是很紧张的，但是我有我自己的办法来调整，给自己的一个死党打个电话，谈谈心，这是最好的办法。

        ⑦独生子女都是父母的一个宝，当然我也不例外。自从出生的那进起，我便储蓄了一份不薄的亲情。在海上航行时，亲情是我的指南针；在烈日炎炎的沙漠中，亲情是一片绿荫；而在风平浪静、美丽的港湾中，亲情则是我的海岸。无论走到哪里，她都会陪伴在我的左右。

        ⑧就这么一个由爸爸、妈妈还有我组成的三口之家，没有什么特别的，但却是彼此都相爱的幸福家庭。我爱我家。