一个科学研究小组对5000只“冰川豹蛛”进行测量后发现，1996-2005年间，这种蜘蛛的体形平均增大了8%-10%，同期当地每年的解冻期提前了20-25 天，这支持了他们的猜想，剧烈的气候变化对当地蜘蛛的生长产生了影响。该研究小组负责人表示这种影响的后果很复杂，一下子无法估计出来，这一说法体现了 ( )
①事物间的联系是客观的，无条件的 ②事物本质的暴露和展现有一个过程
③世界总有一些秘密不能为人所理解 ④人的认识具有反复性、无限性

草拟、审核和批准每一个农村公社或每一处领地的条例书，在条例书中将根据当地情况明确规定允许农民长期使用的土地的数量以及他们为使用土地并从地主那里得到其他好处所应向地主履行的义务。
在期限未满以前，农民和家务农奴应像过去一样服从地主绝对履行他们旧日的义务。在乡尚未组织起来和乡法庭尚未成立以前，由地主监督自己领地上的秩序，他们有审判和执行判决之权。——《1861年2月19日宣言》
请回答：
(1)上述材料规定了农民的什么权利?
(2)同时规定了农民的哪些义务?
(3)农奴解放后，与地主的关系是怎样的?

    There was a famous church in London. It was 110 meters high. The center of the church was like a bell. The ceiling of the church was painted by a famous artist. A platform （平台）was built so that the artist could put up the ladder on it and paint the ceiling. The platform was about 70 meters over the ground.
    One day the artist was working hard and had nearly finished one popular corner of the ceiling. Also on the platform was his assistant, who was mixing paints. The artist stepped back so that he could see how his work was progressing. To have a better look at his painting, he stepped back again. Suddenly, his assistant shouted, picked up a small bowl of paint and started to paint the artist’s work on the top. The artist was very angry and rushed forwards to stop him.
    “What do you think you are doing?” he shouted angrily. “Are you mad?” His assistant replied, “I saw you walking backwards to have a better look at your painting. But you didn't notice that you had reached the very edge of the platform. You were in great danger. I wanted to make you move forwards. If I had not made you run forwards, you would have fallen backwards off the edge of the platform.

下列动物中，属于无脊椎动物的一组是（   ）

拜年是中国的传统习俗，我们应该给长辈拜年。（    ）