A.7.95元
B.12.9元
C.4.95元
D.20.85元
参考答案:D
_______in thought, he didn't notice that the teacher was right in front of him. [ ]
A. Losing
B. To lose
C. Being lost
D. Lost
2主变分接头在()。
A.3档
B.4档
C.5档
D.2档