煤的焦化得到的是（）
A、合成气
B、焦油
C、煤气
D、焦炭
参考答案：B, C
Sally's never seen a play in the Shanghai Grand Theatre, _____? [ ]
A. hasn't she
B. has she
C. isn't she
D. is she
少阳经在头部经过的部位是（）。
A.头后部
B.侧头部
C.头顶部
D.前额部
E.全头部
