渗色
参考答案：
在某涂膜上又涂上另一种颜色的涂料，底层涂膜的部分渗入面层涂料中产生与面层涂膜的本来颜色不同的色的现象。
There was a tree in front of the house, ___ owner was seen sitting under it, enjoying the shade.
A．whose
B．where
C．which
D．that
423×187-423×24-423×63的值是( )。
A．41877
B．42300
C．42323
D．42703
