火花塞电极的间隙为（）毫米。
A.0.4-0.5
B.0.3-0.4
C.0.6-0.7
D.0.2-0.3
参考答案：C
—Where is Zhang Hua? Is he in the classroom now?
—He be there, for I saw him in the teachers’ office just now.
A．can’t
B．may not
C．shouldn’t
D．mustn’t
安徽省地形地貌呈现多样性特征。全省大致可分为哪几个自然区域？
