a,C,B,D,C,B,
fill up a vacancy
12, 1,(2n+0.8n), 10,30,(-4a+7b,5,3
Solution (5 points)
-6,x+ 1,x=2.5,AD= 1 DE=4
This is the only place.
1. Urgent! ! ! What does the extended course include?
Olympiad, ancient poetry, ancient prose, idioms
2. What is a professional elective course?
Profe