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 mankind.
A. To tell campus personnel of the new library services. B. To announce the new movies on campus this summer. C. To notify university people of important schedule changes. D. To remind students to validate (使生效) their identification cards.
A. harmful to the human body B. necessary to the human body C. the elements that form cancer D. useless to the human body