下列属于接触变质作用产生的岩石的是
A. 石英岩
B. 千枚岩
C. 大理岩
D. 夕卡岩
---Who is making so much noise in the garden?--- No,__ the children.
A. It is
B. They are
C. That is
D. There are
It was ___ she was about to go out ____ the telephone rang.
A. when ; that
B. so; that
C. before; then
D. when; before