我省正在修建武汉到咸宁的轻轨。修建轻轨需要大量的锰钢。锰钢属于 [ ]
A．金属材料
B．合成材料
C．高分子材料
D．天然材料
答案：A
-How was the school's sports meet?
-We didn't plan it like that but it very well. [ ]
A.tried out
B.went out
C.worked out
D.carried out
A．E=，m=0
B．E=，m=
C．E=，m=0
D．E=，m=
，m=0
，m=
，m=0
，m=