单项选择题
A．there is more food and water in space than on earth B．eating and drinking in space is a special problem C．astronauts can never eat or drink in a spaceship D．there is no food or water in a spaceship
A．Because they had a device called kinetoscope. B．Because they asked Thomas Edison to help them. C．Because they got a way of using their own devices. D．Because Thomas Edison had successfully solved certain problems.
A．wild and cruel B．shy and timid C．stupid and slow D．slow and shy