免疫测定的基础是()
A.免疫原和抗血清的制备
B.沉淀反应
C.凝集反应
D.抗原和抗体的特异性结合反应
E.受体与配体之间的结合
参考答案:D
根据句意及首字母提示补全单词。
1. —What's w with you, Sam?
—I can't find my key to open the door.
2. He thinks his computer is out of s . So he decides to buy a new one.
3. I had a fight with Sam, and we a with each other a lot.
4. She said what he said really s her a lot, because she didn't know why he got so angry with her.
5. Both the boys wanted to go to Beijing, but e of them could go, because there was only one train
ticket.
在WindowsXP中,要在任务栏中显示语言栏图标,可以通过()进行操作。
A.任务栏
B.控制面板
C.我的文档
D.附件