A:抗毒素能特异性的中和外毒素的毒性,是抗体的一种
B:效应B细胞与 效应T细胞相比,具有更加丰富的内质网和高尔基体
C:抗原刺激机体后,T细胞和B细胞都会分化,但是不会增殖
D:吞噬细胞不能特异性地识别抗原
tidy, everywhere, where, must, find, know, help
I have a good friend,Joanna.I ____her well.She is a nice girl but she is not very ____.You can see books, pens and notebooks are ____ in her room.In the school, she always asks." ____is my pen? Where are my books? And where are ...?" I often ____her.This morning, Joanna can't ____her English notebook, and she ____find it.so she asks me to help her.
如图所示,固定的水平长直导线中通有电流I,矩形线框与导线在同一竖直平面内,且一边与导线平行.线框由静止释放,在下落过程中( )
2016年12月,《中华人民共和国环境保护税法》由十二届全国人大常委会第二十五次会议表决通过。回答下列小题。