混转包括（）两种税负转嫁方式。
A、前转
B、顺转
C、后转
D、逆转
参考答案：A, C
—Can you tell me how to use a micro blog on my phone?
—_________. But I have to finish my work first.
A．No problem
B．No way
C．Forget it
D．Don’t mention it
