春节假期，很多同学选择外出游览大自然的美丽风光，愉悦身心。对以下行为你不赞成是：（      ）

与朱元思书

       风烟俱净，天山共色。从流飘荡，任意东西。自富阳至桐庐一百许里，奇山异水，天下独绝。

       水皆飘碧，千丈见底。游鱼细石，直视无碍。急湍甚箭，猛浪若奔。

       夹岸高山，皆生寒树，负势竞上，互相轩邈，争高直指，千百成峰。泉水激石，泠泠作响：好鸟相鸣，嘤嚶成韵。蝉则千转不穷，猿则百叫无绝。鸢飞戾天者，望峰息心；经纶世务者，窥谷忘反。横柯上蔽，在昼犹昏；疏条交映，有时见日。

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Penguins are good swimmers, and they are very good at swimming in the sea. They can dive much deeper than people. Some people can dive about 180 metres, but most people can only dive about 30 metres. Penguins can dive 500 metres. That is a long way down! Do you know the TV Tower in Shanghai? That is 468 metres high.

 Penguins can hold their breath much longer than people.Some people can hold their breath for about five minutes, but most people can only hold their breath for one or two minutes. Penguins can hold their breath for 20 minutes.

Many whales can hold their breath longer than penguins. Some whales can hold their breath for about two hours!