关于人体非特异性免疫的叙述,正确的是( )
A:非特异性免疫是能够遗传的
B:过敏反应是由非特异性免疫异常引起的
C:机体能够通过非特异性免疫产生记忆细胞
D:非特异性免疫只对一种特定的病原体起作用
一位研究中学生心理的学者在一所中学里进行了名为“填写你的优点”的调查活动。结果显示,近50%的学生填写的是“优点零”。这说明( )
具有严重社会危害性是犯罪的法律标志。 ( )
阅读短文,判断对(T)错(F)
I'm Lingling. I have got a new bike. It's a nice bike. I go to school by bike every day. My mother is a teacher. Her school is near our home. So she walks to work. My father is a doctor. He goes to work by car.