3， 6， 6， 9， 9， 12， 12， ( )A．14 B．15 C．16 D．17
参考答案：B
解析：
-- Do you know ________ the new computer yesterday?
-- Sorry, I have no idea.
A．how much did she pay for
B．how much will she pay for
C．how much she paid for
D．how much she will pay for
游标卡尺尺身和游标上的刻线间距都是1mm
