A:N2
B:H
C:He
D:SO3
I'd like _______ bowls of noodles. One is for myself and the other two are for my parents.
This is my bed. ____
济宁市是山东省“西部经济隆起带”的排头兵.它与泰安市的宁阳和东平两县相比( )
如图,圆锥的母线长是3,底面半径是1,A是底面圆周上一点,从A点出发绕侧面一周,再回到A点的最短的路线长是____.
①陈独秀 ②*** ③董必武 ④李大钊