根据短文内容，判断句子正误。
    My friend Tom is a farmer. He has a farm. There are many animals on his farm. Ducks are yellow. They can swim. Rabbits are white. They can jump. Look! Cows are white and black. Where are sheep? Sheep are under a big tree. The dog can say "Woof, woof！"I like animals.

长江三角洲地区与城市带发育不相关的自然因素是 (    )

有关饱和溶液的说法中正确的是（  ）  

我国是一个人口大国，也是一个车辆使用大国。目前，不仅城市车辆剧增，经常拥堵，就是在农村，农用车辆和生活用车也在迅速增加。但是，生活中行人和司机不遵守交通规则的现象却比较常见。请问： 

世界上第一个由发达国家和发展中国家共同组成的区域经济集团诞生在