听短文,完成句子。短文读三遍。 |
生词:chain /t∫ein/ n. 食物链 1.The lion may be the _______ animal in the land food chain. 2.The shark(鲨鱼) is one of the most _______ animals in the sea. 3.We can make the animals and the _______ our food if we want to. 4.Many animals and plants are _______ than before. 5.If we take care of animals and plants, we are _______ ourselves. |