单项选择题
A．Because it was too hot to eat right away. B．Because the Americans found they were from Germany. C．Because people had to get used to their taste. D．Because people thought they contained dog meat.
A．He raised dogs. B．He was a cartoonist. C．He was a cook. D．He sold fast food.
A．They extend their water pipes. B．They give out faint cries. C．They make noises to drive away insects. D．They become elastic like rubber bands.