Once there was a king called David. He lived in a golden place with his 1. He was rich, but he still loves 2 very much.

    One day, a god called Gory got lost and woke up in the garden of David's place. The king 3 him for some days. Gory was very grateful (感激的) and 4 to give David anything he wanted. David was happy and said, "I would like everything I touch to turn into gold."

    At first David was very 5. He touched a table and it became gold. But as he reached out for an apple, it turned into gold and he couldn't 6 it. David became scared. At that moment, his daughter entered the room. David rushed over to hug her. Suddenly, he realized that his daughter was a 7, golden statue (雕像). David cried 8. Then he turned to Gory. Gory told him to go down to the river and wash his 9. David did as what Gory told. Then he returned to the 10. He found everything changed back when he touched the gold.

    From then on, David didn't care for gold any longer.

   的商的末尾有0，□里可以填____。

呼吸道不仅能保证气体顺畅通过，还能对吸入的气体进行处理．下列对呼吸道结构和功能的叙述，错误的是（　　）

控制细胞与外界环境之间进行物质交换的细胞结构是（　　）

下面措施中，哪一种对保持生态环境最有利?