下列物质中,采用悬浮法制备的是()
A、聚丙烯酸酯
B、聚异丁烯
C、乙丙橡胶
参考答案:A
In ________, Shakespeare has not only made a profound analysis of the social crisis in which the evils can be seen everywhere, but also criticized the bourgeois egoism.
A.Hamlet
B.Othello
C.King Lear
D.Macbeth
如图是桃花的结构图,根据你的观察回答问题.
(1)写出图中各结构的名称:
①______;②______;③______;④______;⑤______;⑥______;⑦______;⑧______.①②合称______;⑤⑥⑧合称______.
(2)通过观察桃花的结构可以看出:一朵花是由______、______、______、______、______、______等组成的.
(3)一朵花的主要部分是______和______,因为它们与结出的果实和种子有直接关系.