阅读下文，回答相关问题。
                                                                                                          坚 持
         ①拔河是一项最简单的体育运动，但是，越简单就越富哲理。从表面看，拔河是力量的对抗，从本质上看，则是意志、信念的对抗。一般而言，人数均等的双方力量不会有很大的悬殊，可以说是势均力敌，旗鼓相当。所以，在这种情况下，力量的重要性退居其次，关键是看大家合作的决心，是否齐心协力，是否有顽强的斗志，是否有必胜的信念，是否能坚持到最后一秒钟。
        ②其实，何止是拔河，大凡竞技项目，大凡奋斗成功的历程，有哪个不是这样呢？谁能坚持到最后，谁就赢了对手，谁就赢得了胜利。因此，从这个意义上说，坚持就是胜利。
       ③坚持和胜利画等号，除了坚持者主观信念的作用以外，还需要有知识的支撑。所谓知识的支撑，则是基于对形势的准确判断和对于事理的正确认识。
         ④开宝二年（969）三月，宋太祖赵匡胤亲征太原，最后无功而返，就是一个因为对事理缺乏专业知识和正确认识，该坚持而没有坚持的例子。
         ⑤开始，赵匡胤引汾河水直灌太原城，使太原成了一个孤岛。但奇怪的是，从三月一直到闰五月，太原城墙除了掉下几块土渣子外，基本上什么事也没有。北汉一直在咬牙坚持，但宋军先坚持不下去了。因为正当盛暑之时，很多士兵水土不服，腹泻，精神萎靡，虚脱无力。
        ⑥其实，宋军再困顿，也不会比北汉更困顿，赵匡胤完全有理由坚持下去，但最后，他还是放弃了。开宝二年（969）闰五月中，宋军退兵。
        ⑦宋军撤退之后，北汉决开堤坝，把浸着太原城的水放走。想不到的是，浸泡了数个月的城墙露出水面时，竟然大范围坍塌。北汉君臣看到这个情形，个个都出了一身冷汗，深深地后怕。
         ⑧当时契丹的使者韩知璠也在太原，喟叹道：“宋师引水进城，只知其一，不知其二，如果知道先浸而后涸，则太原城必早早陷落了！”韩知璠此语可谓一针见血，赵匡胤哪里知道土城墙“先浸而后涸”才会坍塌的道理呢。赵匡胤因没有坚持留下了千古遗憾。
        ⑨乌龟和兔子赛跑，驽马十驾功在不舍，聚沙成塔集腋成裘，说的都是坚持；头悬梁锥刺股，尾生抱柱，不抛弃不放弃，说的也是坚持；临财勿苟得，临难勿苟免，说的还是坚持……
        ⑩坚持面对的实在有太多的情境。很多时候，不是因为看到希望才坚持，也不是因为坚持才会有希望。而是因为我们心中的为人为事的准则告诉我们必须要坚持，因为现实已经到了要突破我们拼死坚守的事业和人格底线的时候，我们别无选择。为底线而坚持，就是你直面 “为什么坚持”时最简洁、最坚定、最有力的回答。

十月怀胎不容易，我们要尊敬自己的母亲．请问人的胚胎发育场所是（　　）

人肝细胞合成的糖原储存在细胞内，合成的脂肪不储存在细胞内，而是以VLDL（脂肪与蛋白质复合物）形式分泌出细胞外．下列叙述正确的是（　　）

    Happiness is important for everyone. Most people want to be happy but few know how to find happiness. Money and success don't bring lasting happiness. Happiness depends on ourselves. In other words, we make our own happiness.
    Some people believe that if they are wealthy, with the money they will be able to do anything they want, which means happiness. On the other hand, some people believe that holding a high position in the government is happiness. In this way, you have not only money, but also many other things which can't be bought by money. However, other people believe that having lots of money is not happiness, nor is holding a high position in the government. These people value(重视) their beliefs, or their intelligence, or their health. They think these can make them happy.
    Here are a few ways to help you be happier.
    The first secret of happiness is to enjoy the simple things in life. Too often, we spend so much time thinking about the future, for example, getting into college or getting a good job, that we don't enjoy the present. You should enjoy life's simple pleasures, such as reading a good book, listening to your favorite music, or spending time with close friends. People who have close friends usually enjoy happier and healthier lives.
    The second secret of happiness is to be active. Many people go dancing or play sports. People can forget about their problems and only think about the activities.
    Finally, many people find happiness in helping others. According to studies, people feel good when they volunteer their time to do many meaningful things for other people. If you want to feel happier, do something nice for someone. You can help a friend with his or her studies, go shopping to get food for an old neighbor, or simply help around the house.
    Now maybe you know how to find happiness!