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 photography was developed B．how to show your ideas and feelings in pictures C．how to take pictures in the world D．how to use different cameras