单项选择题
A．about B．in C．into D．by
A．that the universe is so large that we cannot imagine it B．where the planets in the universe came from C．how the high mountains were formed on the sun D．why the tides over the surface of the sun were so powerful
A．How to Feed Cows B．A Bad Sunday C．Cows and Their Masters D．The Rebellion (反抗) of the Cows