问题 单项选择题 A型题

以一种高分子化合物为囊材,将囊心物分散在囊材溶液中,然后加入凝聚剂,使囊材凝聚成囊,经进一步固化制备微囊,该方法是()

A.单凝聚法

B.复凝聚法

C.溶剂-非溶剂法

D.改变温度法

答案

参考答案:A

材料分析题

材料一:小利看到有人抽烟,于是也想尝一口。从此,常偷家里的钱买烟抽,他觉得这样在同学面前特有面子。

材料二:民民自小爱下象棋,星期天、节假日喜欢跟人下象棋。

(1)材料一二分别属于什么情趣?这两类情趣分别对人有怎样的影响?

                                                                                                                                                              

                                                                                                                                                             

                                                                                                                                                            

(2)在生活中,我们应怎样追寻高雅的生活?

                                                                                                                                                           

                                                                                                                                                          

                                                                                                                                                           

单项选择题