根据拼音在括号内写出相应的汉字。
mèi lì( )恒久,文昌水秀,民风chún pǔ( ),政通人和。美哉,泰州!
魅力;淳朴(纯朴)
阅读理解
My name is Li Ming. I am a Chinese boy. I’m twelve years old. There are 5 people in my family.
My father is a doctor. He works in a hospital. My mother is a teacher. She teaches in a high school. Now we live at Zhanghua Road in Beijing. I’m a student of Grade Seven. My little sister Li Li is only four years old. My grandparents live with us. They look after Li Li at home.
阅读短文,回答问题。
1. Where does Li Ming live?
________________________________________________
2. What does Li Ming’s mother do?
3. Where does his father work?
4. Who is the only(唯一的) student in his family?
5. Who looks after Li Li?
下列有关神经兴奋的叙述,正确的是______。
A.静息状态时神经元的细胞膜内外没有离子进出B.组织液中Na+浓度增大,则神经元的静息电位减小C.突触间隙中的神经递质经主动运输穿过突触后膜而传递兴奋D.神经纤维接受刺激产生的兴奋以电信号的形式传导