单项选择题
A. They were more impressed with slower speed. B. They thought cars were unnecessary. C. They enjoyed just seeing the cars. D. They were easily bored.
A. is very restless B. uses more energy C. is looking for food D. has lost its young
A. send the driver to the hospital B. check how seriously the car is damaged C. do the research on the car accident D. find out if a cell phone is used