单项选择题
A．$ 4 million. B．$ 5 million. C．$ 9 million. D．$1 million.
A．Fast food is popular because of the high fat. B．Fast food is good to us. C．Fast food has rich nutrients. D．Fast food has its advantage and disadvantag
A．color and its surprising effect B．the eyes of likely things C．danger caused by color blindness D．color blindness and color preference