下图为某学习小组制作洋葱鳞片叶表皮细胞临时装片时的方法步骤图。请分析回答：

(1)请你把正确的实验操作顺序补充完整：C→____ （用序号和箭头表示）。
(2)步骤C中，滴加的液体是____ 。
(3)步骤D中，撕取的是洋葱鳞片叶的____ 表皮。
(4)将某同学认真制作的玻片置于显微镜下观察，发现视野中有这样几个结构：边缘很黑、较宽，里面为空白的圆形或椭圆形，用镊子轻压盖玻片会移动和变形，这个结构一定是____ 。它的产生可能是步骤____ （填序号）操作不规范引起的。

战国时期，各种社会矛盾异常复杂，不同阶级和阶层在是否建立、如何建立封建制度等问题上展开了激烈的讨论，形成了儒、墨、道、法诸家，出现了“百家争鸣”的思想繁荣局面，加快了封建制度的建立。这告诉我们（  ）

①一定形态的经济和政治决定一定形态的文化 ②哲学是社会变革的先导 ③哲学的内容虽是虚幻的东西，但与社会生活紧密相连 ④哲学是对社会生活的正确反映

    It was Sunday morning. Peter was at home. He had no 1. After breakfast，Peter said to his mother， “Mom，could you go to the beach(海滩） with 2？”“OK, dear. I want to go there, too.” his mother said， “The food and drinks there are very3. Let's take some food and drinks, so we don't need to 4 any there.” “Good idea!” said Peter. They 5 a bus there. There weren't 6 people on the bus, and they each had a seat.

    On the beach, Peter and his mother had a 7 time. They played ball games and had a swim in the8.Peter made 9 new friends there. One is Victor and the other is Sally. After getting home, Peter 10an e-mail to his cousin Lucy, and he told her what he and his mother did on the beach.