现代类人猿和人类的共同祖先是（  ）

Zhang Shiyuan 13

    I am very interested in all kinds of dramas,espccially those by William Shakespeare.But it is impossible to watch stage(舞台) drams every week.So my small goal is to watchat least one movie online from Shakespear's works,It will not only improve my English,but also help me have my own taste in drama.
Wu Qianhui,14

    For me,the small goal is to run 300 meters everyday. It isn't an easy thing,especially to do it everyday.But I will not shy away from the challenge.I have the confidence(自信)to make it.  I believe I can hold on and achieve my goal.

Gu Jiayi,13

    My goal is to master a skill like cooking. It is not very difficult,but it takes a lot of time.So I'll make myself leam how to cook during holidays.The aim will help me make gooduse of time and be more independent.

Zhen Yishi,14

    I want to finish reading two English novels this year .Reading plays an important role in my lile. It will not only improve my English reading and witing skill,but also enlarge my scope of kowledge in many felds.It is not a big goal.But to achieve this goal I need patience and persistence(坚持).

Shen Botao,14

    My present small goal is to pass the piano grade exam.When I was in Primay school, I began to learn to play the piano. I not only took a great interest in music, but also relaxed myself. I want to play the piano better. I think I can make it by the end of this term.

图2—2—15是洋葱表皮细胞装片制作的几个步骤，请回答：

  (1)图中操作步骤的正确顺序是____ 。

  (2)图A表示盖玻片的放置，正确的方法是____ ，再轻轻放平，这样可以____ 。

  (3)图中步骤____ 表示染色过程，染液是____ 。

  (4)如果D过程中滴的水过多，材料和玻片容易浮动，你如何处理?____ 。

  (5)用显微镜观察时，发现视野中有一黑边圆形物，轻压盖玻片，该物变形并移动，该物为____ 。