写出可钻性最好的岩石名称？
参考答案：
流砂岩，胶泥岩，盐岩层，石膏岩，煤层。
Allen wanted to know ____ after it got out of the UFO. [ ]
A. what is the alien doing
B. what the alien would do
C. where would the alien go
D. where the alien is going
犀豉饮功效与作用
