单项选择题
A．California redwoods were named in his honor. B．He was illiterate. C．He created a unique alphabet. D．He recovered from his madness and helped mankin
A．our natural surroundings are in danger of being destroyed by industry B．the fixed supply of natural resources marks a point beyond which economic growth cannot continue C．the world population is ever increasing D．more efforts should be made to improve the quality of our material life