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慎终如始

    臣观自古帝王受图定鼎^①皆欲传之万代，贻厥孙谋^②。 故其垂拱岩廊^③，布政天下。其语道也，必先口口而抑浮华；其论人也，必贵口口而鄙邪佞；言制度也，则绝奢靡而崇□□；谈物产也，则重谷帛而贱口口。然受命之初，皆遵之以成治；稍安之后，多反之以败俗，其何故哉？岂不以居万乘^④之尊，有四海之富：出言而莫己逆，所为而人必从，公道溺于私情，礼节亏于嗜欲故也！语日：“非知之难，行之惟难：非行之难，终斯难。”所言信矣。

【注释】①受图定鼎：建立王朝，统治天下。②贻厥孙谋：贻，遗留；厥，其，他的；孙谋，指谋及自己的孙辈。这句指（把天下）传留给子孙后代。③垂拱岩廊：垂拱，指垂手和拱手（敛手），即由于任人得当，官员都称职，作天子的可以悠闲地垂手或抱手，不必过问。岩廊，即今之游廊。整句是说：在游廊上悠闲地散步。④万乘：乘，车乘。周制，天子出兵时车万乘，故以万乘称天子。

被称为“裸子植物故乡”的国家是（  ）

    Do you know that fish come out of eggs when they were born? After the baby fish comes out of the egg，it eats the food in the egg. When it is big enough，it leaves the egg. It swims in the water. You can see the eyes and the nose. Its ears are hidden (藏) in the head.

    Some fish eat other fish. The fish that eat plants have smaller mouths and teeth. The fish that eat other fish need larger mouths and stronger teeth.

Fish are usually dark on the top and light on the bottom.