There is an old Chinese saying, “If someone gives you a little drop of water, you should return a spring of water." That means if someone helps you a bit, you should remember it and thank them gratefully(感激的）in return.

       We should live in a world of gratitude. We should prove it with actions, not just words. We thank people who hurt us, because they teach us important things. We thank people who give us up, because we learn how to be independent. We thank people who selfish(自私的）, because we learn the importance of being kind. Of course, we should thank people who help us. We should thank people who teach us. We should thank people who care about us.

      We thank our parents. They work hard all the time in order to give their sons and daughters a better life. They cook meals for us, they do the chores for us, they always give us food and clothes, they teach us what is right and what is wrong.

      We thank our teachers who give us dreams. They teach us a lot of things but they ask for nothing from us. We are well-educated of them.

     There are a lot of people that we should be grateful to in our life. We should find a way to thank them.

下列有关动物生殖、发育的叙述中，错误的是（    ）

怒江是目前我国仅存的两条尚未开发的河流之一。怒江的鱼类资源中土著鱼种数量之高在全国少有,可以说,怒江是一个特殊的鱼类基因库。怒江峡谷曾经被誉为世界第二大峡谷,其自然景观颇为壮观。围绕着要不要在怒江上建坝,有关部门一直持谨慎态度,多次邀请生态、农业、林业、地质、地理、遗产保护、水利电力、环境科学、野生动植物保护及社会发展等方面的专家进行研讨。

有关部门在怒江开发问题上持谨慎态度体现了联系的哪些特点。