问题 单项选择题

下列关于免疫酶化学组织切片的叙述,错误的是()

A.冷冻切片为ICE首选

B.石蜡切片为ICC首选

C.对未知抗原显色,冷冻和石蜡切片最好同时应用

D.根据抗原的性质选择切片

E.微波照射的切片可激活部分核内抗原

答案

参考答案:B

解析:因为在石蜡包埋固定过程中,可能使抗原物质发生某些改变,致使其与单克隆抗体反应的抗原决定簇丢失,所以以新鲜组织的冰冻切片为首选。

写作题
最近你和父母就你要参加校篮球队一事交换了意见,各自阐述了观点。现在请你参照表内所提供的信息,写一篇英语短文。
Your parents’ ideas
Your ideas
1. less time for study
1. …
2. not strong enough
2. …
3. get eaily injured
3. …
 
注意:1. 开头部分已写好,你只需接着写;
2. 所写内容必须包括表格中父母的想法和你的想法(至少三条)
3. 词数:70个左右。
Recently I’ve had a discussion with my parents about whether or not I should join the school basketball team.                                                                        
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                
选择题