单项选择题
A．Half of the dinosaurs lived alone. B．Most dinosaurs moved long distances. C．Many dinosaurs settled in the north. D．Some dinosaurs lived in big groups.
A．was paid $ 35,000 B．learned to paint C．had already buried the treasure D．did not know what the story would be about
A．too much food and water in the body B．a lack of oxygen in the blood C．seeing or thinking about food D．a lack of certain chemicals in the blood