根据对话内容及问题选择正确答案（  ）

阅读下面两个文言语段，完成后面问题。
       【甲】从小丘西行百二十步，隔篁竹，闻水声，如鸣佩环，心乐之。伐竹取道，下见小潭，水尤清冽。全石以为底，近岸，卷石底以出，为坻，为屿，为嵁，为岩。青树翠蔓，蒙络摇缀，参差披拂。 　
        潭中鱼可百许头，皆若空游无所依。日光下澈，影布石上，佁然不动；俶尔远逝，往来翕忽，似与游者相乐。 　　
        潭西南而望，斗折蛇行，明灭可见。其岸势犬牙差互，不可知其源。 　　
        坐潭上，四面竹树环合，寂寥无人，凄神寒骨，悄怆幽邃。以其境过清，不可久居，乃记之而去。
                                                                                                                                                  （选自 柳宗元《石潭记》）
       【乙】青溪之跳珠溅雪，亦无以异于诸泉，独其水色最奇。盖世间之色，其为正也间也，吾知之，独于碧不甚了然。今见此水，乃悟世间真有碧色。如秋天，如晓岚^①；比之舍烟新柳则较浓，比之脱箨^②初篁则较淡；温于玉，滑于纨^③；至寒至腴，可拊^④可餐。
                                                                                                                                              （选自 袁中道《游青溪记》）
          注：①岚：林中雾气。②箨（tuò）：竹笋皮，笋壳。③纨：白色的丝绢。④拊（fǔ）：抚摩。

①源远流长        ②唯我独尊        ③博大精深       ④一脉相承

    Why do Americans struggle with watching their weight, while the French, who eat rich food, continue to stay thin? Now a research by Cornell University suggests how life style and decisions about eating may affect weight. Researchers concluded that the French tend to stop eating when they feel full. However, Americans tend to stop when their plate is empty or their favorite TV show is over.

    According to Dr. Joseph Mercola, a health expert, the French see eating as an important part of their life style. They enjoy food and therefore spend a fairly long time at the table, while Americans see eating as something to be squeezed (挤进) between the other daily activities. Mercola believes Americans lose the ability to sense when they are actually full. So they keep eating long after the French would have stopped. In addition, he points out that Americans drive to huge supermarkets to buy canned and frozen foods for the week. The French, instead, tend to shop daily, walking to small shops and farmers' markets where they have a choice of fresh fruits, vegetables, and eggs as well as high-quality meats for each meal.

    After a visit to the United States, Mireille Guiliano, author of French Women Don't Get Fat, decided to write about the importance of knowing when to stop rather than suggesting how to avoid food. Today she continues to stay slim and rarely goes to the gym.

    In spite of (尽管) all these differences, evidence shows that recent life style changes may be affecting French eating habits. Today the rate of obesity (肥胖)—or extreme overweight — among adults is only 6%. However, as American fast food gains acceptance and the young refuse older traditions, the obesity rate among French children has reached 17% — and is growing.