对于N2值，如果（）则在CDU内可以查到一个超限
A.进入黄区
B.进入红区
C.接近黄区
D.接近红区
参考答案：B
It was in the small house ___ was built with stones by his father ___he spent his childhood .
A．which , that
B．that , where
C．which , which
D．that , which
税收制度
