根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    Some scientists say our clothes are so powerful that they can change our feelings. 1, we can control our feelings 2 different colors of clothes.

    Normally when we are sad, we will wear dark colored clothes. On the other hand, when we are happy, we often choose to wear 3 colored clothes. This is because these clothes can make others 4 how we are feeling. It seems to say, “I'm upset, don't trouble me!” or “Today I'm pleased and easy-going.” Of course, we also know that some people like 5 different colors because of their likes or dislikes.

    Some people 6 these words. They often say, “If only this truly worked.” Well, in answer to those people, there are a lot of studies about what happens to 7 feelings. If he is sad, ask him to wear red or orange clothes. He will become 8 and happy very soon. If he is happy and excited, ask him to wear blue or black clothes. He will become quiet or peaceful a few minutes later. It proves that if we wear special colors of clothes, it can change our feelings.

    Suppose we are feeling sad, if we are in black, we may begin to feel 9. However, if we are in red or yellow, it can make us feel a little better.

    So remember, if you are not feeling your best, you can try wearing some different colored clothes. If one color has no effect on your feelings, maybe 10 will. Each color has its own power.

我会填．

阅读下面的文字，回答问题：

    秋水时至，百川灌河；泾流之大，两涘渚崖之间不辩牛马。于是焉河伯欣然自喜，以天下之美为尽在己。顺流而东行，至于北海，东面而视，不见水端。于是焉河伯始旋其面目，望洋向若而叹曰：“野语有之曰，‘闻道百，以为莫己若’者，我之谓也。且夫我尝闻少仲尼之闻而轻伯夷之义者，始吾弗信；今我睹子之难穷也，吾非至于子之门则殆矣，吾长见笑于大方之家。”

    北海若曰：“井鼃不可以语于海者，拘于虚也；夏虫不可以语于冰者，笃于时也；曲士不可以语于道者，束于教也。今尔出于崖涘，观于大海，乃知尔丑，尔将可与语大理矣。天下之水，莫大于海，万川归之，不知何时止而不盈；尾闾泄之，不知何时已而不虚；春秋不变，水旱不知。此其过江河之流，不可为量数。而吾未尝以此自多者，自以比形于天地而受气于阴阳，吾在于天地之间，犹小石小木之在大山也。方存乎见少，又奚以自多！计四海之在天地之间也，不似礨空之在大泽乎？计中国之在海内，不似稊米之在大仓乎？号物之数谓之万，人处一焉；人卒九州，谷食之所生，舟车之所通，人处一焉；此其比万物也，不似豪末之在于马体乎？五帝之所连，三王之所争，仁人之所忧，任士之所劳，尽此矣！伯夷辞之以为名，仲尼语之以为博，此其自多也；不似尔向之自多于水乎？”

你怎样理解本文所选的两段文字的主旨？